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23 Aug 2017,01:52 hours IST
Version 1 of LAI list of 50 species was prepared by S D Biju based on all available type/referred specimens, collection date if available and original descriptions. This is the Version 2, after additions or deletions by the following amphibian researchers: Bossuyt, F, Church D R, Das I, Dinesh K P, Firoz A, Gower D J, Gururaja K V, Kamei R G, Mahony S, Robin M, Saibal S, Vasudevan K, Vijayakumar S P and Wilkinson M.

The 48 lost amphibians listed below (a few more species will be announced soon) are NOT necessarily valid species. Some of the species currently in the list are only potentially lost species and would require further taxonomic study. The rediscovery of these lost named populations will allow taxonomists to finally establish whether these taxa are indeed valid species, or if they should be synonymised with other known species.  

“Last seen” mentioned for each species is calculated from the date of collection, if available. If the collection date is not available then the publication date is considered for “Last seen”.


Original name: Bufo stomaticus peninsularis;Original Publication: Rao, 1920. Jou. of Bombay natural History Society 27: 126.
Last seen: 1920 (90 years): only from the original description based on one specimen.
Type locality: "Mavkote and Watekille, Coorg" approximately 12°06’ N, 75°47’ E, 1100 m a.s.l., Karnataka, India.
Type: Holotype, ZSIC 19176.
Notes: This taxon is currently considered the same species as Duttaphrynus stomaticus. Type specimen is damaged and further taxonomic and molecular studies are necessary to verify its status (SDB, unpublished).
IUCN status: not evaluated.

Original name: Ansonia rubigina; Original Publication: Pillai and Pattabiraman 1981 Proc. Indian Acad. Sci., Ser. B., 90: 203.
Last seen: 1981 (29 years): only from the original description based on a single specimen.
Type locality: “Kummattan Thodu”, a tributary of River Kunthi, Silent Valley, approximately 11°13’ N, 76°28’ E, alt. 1000 m a.s.l., Kerala, India.
Type: Holotype, ZSI-SRS VA/775.
Notes: Study of all the museum specimens (and personal collections of researchers), indicates that the species reported after the original publication do not belong to this species (SDB, unpublished data).
IUCN status: Vulnerable (VU).

Original name: Rana ghoshi; Original Publication: Chanda, 1990. Hamadryad 15:16-17.
Last seen: 1975 (35 years): only from the original description based on a single specimen.
Type locality: "Khugairk Reserve Forest, Manipur”, coordinates not known, 925 m a.s.l., Manipur, India.
Type: Holotype, ZSIC A8472.
Notes: The locality name “Khugairk” is obscure. SDB and RGK tried to trace the locality name and failed. The type specimen was collected 15 years prior to the species description.
IUCN status: Data Deficient (DD)

Original name: Rana assimilis; Original Publication: Blyth, 1852, J. Asiat. Soc. Bengal, 21: 355.
Last seen: 1852 (158 years): Known only from the original description of an unmentioned number of specimens.
Type locality: "Calcutta . . . (also inhabiting Arakan)", now Kolkata, 22°34’ N, 88°22’ E, 13 m a.s.l., West Bengal, India.
Type: Holotype, never designated, presumed to be LOST
Notes: Currently considered a member of the genus Fejervarya, but not associated with a living population.
IUCN status: Data deficient (DD).

Original name: Rana brama; Original Publication: Lesson, 1834, In Bélanger (ed.), Voy. Indes- Orientales N. Eur. Caucase Georgie Perse, Zool.: 329
Last seen: 1834 (176 years): only from original description and type specimen.
Type locality: "Bengale" now constitutes Bangladesh and West Bengal, Orissa, Jharkhand and Bihar in India.
Type: Holotype, MNHNP 4899, according to Guibé, 1950 "1948" (studied by S D Biju, 2000).
Notes: Provisionally placed in the genus Fejervarya. Problematic status, not associated with a biological population of frogs (Dubois & Ohler, 2000).
IUCN status: Data deficient (DD).

Original name: Rana murthii; Original Publication: Pillai, 1979. Bull Zool. Surv. India 2: 39. Last seen: 1979 (31 years): only from the original description based on several specimens.
Type locality: “forest at Naduvattom, Gudallur, Tamil Nadu", 11°28’ N, 76°34’ E, 1890 m a.s.l.
Type: Holotype, ZSI-SRS VA/773 (SDB studied in 2000. During a recent visit in 2010, could not find the specimen in the type bottle, SDB personal observation).
Notes: Study of all the museum specimens (and personal collections of researchers), indicates that the species reported after the original publication do not belong to this species. Currently only four paratypes remain at ZSI-SRS.
IUCN status: Critically Endangered (CR).

Original name: Rana (Tomopterna) parambikulamana; Original Publication: Rao, 1937. Pro. Indian Acad. Sci., Ser. B, 6: 391
Last seen: 1937 (73 years): only from the original description based on a single specimen.
Type locality: “Parambikulam forests”, 10°22’ N, 76°49’ E, 1000 m asl, Kerala, India.
Type: Holotype CCB, LOST
Notes: Based on the original description and illustration this species probably belongs to the genus Fejervarya.

IUCN status: Data Deficient (DD)

Original name: Rana (Hylarana) sauriceps; Original Publication: Rao, 1937. Pro. Indian Acad. Sci., Ser. B, 6: 396
Last seen: 1937 (73 years): only from the original description based on ‘several specimens’.
Type locality: “Wattekole, Coorg”, 12° 06’ N, 75°47’ E, 1100 m a.s.l., Karnataka, India
Type: Holotype CCB: LOST
Notes: New collections are necessary to redefine this species and assess its validity.
IUCN status: Data Deficient (DD).

Original name: Pyxicephalus khasianus; Original Publication: Anderson, 1871. J. Asiat. Soc. Bengal, 40: 23.
Last seen: 1871 (139 years).
Type locality: "Khasi Hills", approximately 25°07’–26°00’ N, 89°40’–92°09’ E, Meghalaya, India.
Type: Not designated, deposited at ZSIC. Probably LOST
Notes: New collections are necessary to redefine this species and assess its validity.
IUCN status: Data Deficient (DD)

Original name: Rana (Tomopterna) leucorhynchus; Original Publication: Rao, 1937. Proc. India Acad. Sci., Ser. B, 6: 392.
Last seen: 1937 (73 years): only from the original description based on one specimen.
Type locality: "Wattakole, Coorg”, 12°06’ N, 75°47’ E, 1100 m a.s.l., Karnataka, India.
Type: Holotype, CCB, LOST.
Notes: Based on the original description and illustration this species probably belongs to the genus Sphaerotheca.
IUCN status: Data Deficient (DD)

Original name: Rana charlesdarwini; Original Publication: Das, 1998. Hamadryad, 23:42
Last seen: 1997 (13 years): only from the original description based on 3 adult and 5 larval specimens.
Type locality: "ca. 0.3 km N of summit of Mount Harriet (10° 45′ N and 92° 46′ E), Mount Harriet National Park, South Andaman Island, Bay of Bengal, India, altitude 365 m asl".
Type: Holotype: ZSIC A8890.
Notes: Systematic status uncertain, placed in the genus Ingerana tentatively.
IUCN status: Critically Endangered (CR)

Original name: Philautus elegans; Original Publication: Rao, 1937. Proc. Indian Acad. Sci., Ser. B, 6: 407.
Last seen: 1937 (73 years): only from the original description based on an unknown number of specimens.
Type locality: “Kempholey, Hassan” 13°03’N, 75°53’E, 880 m a.s.l., Hassan dist., Karnataka, India.
Type: Holotype, CCB, LOST
Notes: New collections are necessary to redefine this species and assess its validity.
IUCN status: Data Deficient (DD)

Original name: Philautus narainensis; Original Publication: Rao, 1937. Proc. Indian Acad. Sci., Ser. B, 6: 413.
Last seen: 1937 (73 years): only from the original description based on an unknown number of specimens.
Type locality: “Kottigehar, Kadur” 13°07’N, 75°37’E, 850 m a.s.l., Hassan dist., Karnataka, India.
Type: Holotype,CCB, LOST.
Notes: New collections are necessary to redefine this species and assess its validity.
IUCN status: Data Deficient (DD).

Original name: Ixalus silvaticus; Original Publication: Boulenger, 1882. Cat. Batr. Sal. Coll. Brit. Mus. Ed. 2: 469.
Last seen: 1882 (128 years): only from the original description based on “several” specimens.
Type locality: “Malabar”, from approximately 09°00’–16°5′ N.
Type: Syntypes, NHM 82.2.10.52-59.
Notes: Study of all the museum specimens (and personal collections) indicates that the species reported after the original publication do not belong to this species (SDB unpublished data).
IUCN status: Data Deficient (DD).

Original name: Philautus swamianus; Original Publication: Rao, 1937. Proc. Indian Acad. Sci., Ser. B, 6: 409.
Last seen: 1937 (73 years): only from the original description based on a single specimen.
Type locality: “Kottigehar, Kadur", 13°07′ N, 75°37′ E, 850 m a.s.l., Karnataka, India.
Type: Holotype, CCB, LOST.
Notes: New collections are necessary to redefine this species and assess its validity.
IUCN status: Data Deficient (DD).

Original name: Micrixalus thampii; Original Publication: Pillai, 1981. Bull. Zool. Surv. India, 3: 153.
Last seen: 1981 (29 years): only from the original description based on two specimens.
Type locality: “Madiri Mavam Thodu tributary of the Kunthi River…..Silent Valley”, 11°10’ N, 76°22’ E, Kerala, India.
Type: Holotype, ZSI-SRS VA/778, probably LOST.
Notes: Study of all the museum specimens (and personal collections) indicates that the species reported after the original publication do not belong to this species (SDB unpublished data.)
IUCN status: Data Deficient (DD).

Original name: Ramanella anamalaiensis; Original Publication: Rao, 1937. Proc. Indian Acad. Sci., Ser. B. 6: 420.
Last seen: 1937 (73 years): only from the original description based on a single specimen.
Type locality: “Base of Anamallai Hills, Coimbatore District” approximately 10°12’ N, 76°24’ E, 1000 m a.s.l., Tamil Nadu, India.
Type: Holotype, CCB, LOST.
Notes: New collections are necessary to redefine this species and assess its validity.
IUCN status: Data Deficient (DD).

Original name: Ramanella minor; Original Publication: Rao, 1937. Proc. Indian Acad. Sci., Ser. B. 6: 417.
Last seen: 1937 (73 years): only from the original description based on a single specimen.
Type locality: “Saklespur, Hassan", 12°58’ N, 75°46’ E, 840 m a.s.l., Karnataka, India.
Type: Holotype, CCB, LOST.
Notes: New collections are necessary to redefine this species and assess its validity.
IUCN status: Data Deficient (DD).

Original name: Hylaedactylus montanus; Original Publication: Jerdon, 1854. J. Asiat. Soc. Bengal, 22: 533.
Last seen: 1854 (156 years): only from the original description based on a single specimen.
Type locality: “Mountain streams in Wynaad” 11°26’–11°48’ N and 75°46’–76°26’ E, 800–1500 m a.s.l., Kerala, India.
Type: Holotype, ZSIC, LOST.
Notes: New collections are necessary to redefine this species and assess its validity and distribution.
IUCN status: Near threatened (NT).

Original name: Amolops chakrataensis; Original Publication: Ray, 1992. Indian Jour. Forestry, 15(4): 346.
Last seen: 1985 (25 years): only from the original description based on one specimen.
Type locality: “Dehra Dun district, Chakrata, Uttar Pradesh from a hill stream, 14 km northwest of
Chakrata on Tuni road”, 30°42´8.8”N, 77°53´33.2”E, 1366 m a.s.l., now Uttarakhand, India.
Type: Holotype, NRS/ZSI, A-197.
Notes: Collected seven years prior to description. New collections are necessary to redefine this species and assess its validity and distribution.
IUCN status: Data Deficient (DD).

Original name: Amolops jaunsari; Original Publication: Ray, 1992. Indian Jour. Forestry, 15(4): 348.
Last seen: 1985 (25 years): only from the original description based on one specimen.
Type locality: “Dehra Dun district, Chakrata, Uttar Pradesh; collected from Amlawa River, nearly 2 km upstream from Sahiya”, 30°36´54.7” N, 77°52´24.6” E, 1062 m a.s.l., now Uttarakhand state, India.
Type: Holotype, NRS/ZSI, A-196.
Notes: Collected seven years prior to description. New collections are necessary to redefine this species and assess its validity and distribution.
IUCN status: Data Deficient (DD).

Original name: Rana (Hylorana) bhagmandlensis; Original Publication: Rao, 1922. Jour. Bombay Nat. Hist. Soc. 28: 441.
Last seen: 1921 (89 years), only from the original description based on two specimens.
Type locality: “Water course in the forests of Bhagamandla, Coorg, 4000 feet” approximately 12°24’ N, 75°31’ E, 840 m a.s.l., Karnataka, India.
Type: Holotype, NHM 1947.2.2.12.
Notes: Dutta (1990) designated BM 1947.2.2.12 as lectotype. Dubois (1992) not accepted, synonymised (without discussion) as Hylarana aurantiaca. Type specimen registered at NHM in 1921 (collected more than 89 years ago)
IUCN status: Vulnerable (VU).

Original name: Rana (Hylorana) intermedius; Original Publication: Rao, 1937. Proc. Indian Acad. Sci. Ser., B. 6: 394.
Last seen: 1937 (73 years): only from the original description based on a single specimen.
Type locality: "Saklespur, Hassan District, Mysore State", 12°58’ N, 74°42’ E, 840 m a.s.l., Karnataka, India.
Type: Holotype, CCB, LOST.
IUCN status: Near Threatened (NT).

Original name: Rana (Hylorana) gracilis montanus; Original Publication: Rao, 1922. J. Bombay Nat. Hist. Soc., 28: 439.
Last seen: 1922 (88 years): only from the original description based on two specimens.
Type locality: "Hill forests of Bhagamandla",12°24’ N, 75°31’ E, 840 m a.s.l., Karnataka, India.
Type: Holotype, NHM 1921.1.20.6; paratype NHM 1921.1.20.7.
IUCN status: Near Threatened (NT).

Original name: Philautus longricrus; Original Publication: Rao, 1937. Proc. Indian Acad. Sci., Ser. B., 6: 414.
Last seen: 1937 (73 years): only from the original description based on a single specimen.
Type locality: “Kempholey, Hassan", Karnataka”, 13°03’ N, 75°53’ E, 880 m a.s.l.
Type: Holotype, CCB, LOST.
Notes: Neotype designation is necessary to redefine this species and assess its validity and distribution.
IUCN status: Data Deficient (DD).

Original name: Rana (Discodeles) tenuilingua; Original Publication: Rao, 1937. Proc. Indian Acad. Sci., Ser. B., 6: 397.
Last seen: 1937 (73 years): only from the original description based on a single specimen.
Type locality: "Kemphole Ghats, Hassan, Mysore, South India", 13°03’ N, 75°53’ E, 880 m a.s.l., Karnataka, India.
Type: Holotype, CCB, LOST.
Notes: Neotype designation is necessary to redefine this species and assess its validity and distribution.
IUCN status: Data Deficient (DD).

Original name: Philautus shyamrupus; Original Publication: Chanda and Ghosh, 1989. J. Bombay Nat. Hist. Soc., 86: 215.
Last seen: 1983 (27 years): Only from the original description of five specimens.
Type locality: “Hornbill, Namdapha Tiger Reserve and proposed Biosphere Reserve, 27°32’ N, 96°26’ E, 585 m a.s.l., Arunachal Pradesh”, India.
Type: Holotype ZSI (KZ 313), Paratypes ZSI (KZ 314–317).
Notes: Examination of the type specimens indicates that this species is closely related to C. vittatus.
IUCN status: Data Deficient (DD).

Original name: Ixalus chalazodes; Original Publication: Gunther, 1876. Proc. Zool. Soc. London, 1875:574.
Last seen: 1874 (136 years): only from the original description based on a single specimen.
Type locality: "Travancore", 08°15’–09°15’ N and 76°32’–77°03’ E, 0–880 m a.s.l.
Type: Holotype, NHM 1947.2.6.35.
Notes: Type specimen registered at NHM in 1874 (collected one or more years before description).
IUCN status: Critically Endangered (CR); Extinct (Biju and Bosuut, 2009).

Original name: Ixalus flaviventris; Original Publication: Boulenger, 1882, cat. Batr. Sal. Coll. Brit. Mus. Ed. 2: 105.
Last seen: 1874 (136 years): only from the original description based on ten specimens.
Type locality: "Malabar”, from approximately 09°00’–16°5′ N.
Type: Lectotype, NHM 1947.2.26.98 (ex BMNH 1874.4.29.1202)
Notes: Type specimen registered at NHM in 1874 (collected 8 or more years before description). Ten specimens in the original type series consist of several species, thus a lectotype was designated for the species based on one of the syntypes (Bossuyt & Dubois, 2001)
IUCN status: Data Deficient (DD); Extinct (Biju and Bossuyt, 2009).

Original name: Ixalus jerdonii; Original Publication: Günther, 1876 "1875". Proc. Zool. Soc. London, 1875: 575
Last seen: 1872 (138 years): only from the original description based on one specimen.
Type locality: “Darjeeling”, approximately 27°02′ N, 88°10′ E, 2130 m a.s.l., West Bengal, India.
Type: Holotype, NHM 1872.4.17.172.
Notes: Type specimen registered at NHM in 1872 (collected 4 or more years before description)
IUCN status: Data Deficient (DD).

Original name: Polypedates jerdonii; Original Publication: Gunther. 1876"1875", Proc. Zool. Soc. London, 1875: 571.
Last seen: 1872 (138 years): only from the original description based on two specimens.
Type locality: "Darjeeling", approximately 27°02′ N, 88°10′ E, 2130 m a.s.l., West Bengal, India.
Type: Lectotype, NHM 1947.2.7.84
Notes: Type specimen registered at NHM in 1872 (collected 4 or more years before description)
IUCN status: Data Deficient (DD)

Original name: Megalophrys kempii; Original Publication: Annandale, 1912. Rec. Indian Mus., 8: 20 Last seen: 1912 (98 years): only from the original description based on a single specimen.
Type locality: “Upper Rotung (2,000 ft.)", 28°08’ N, 95°12’ E, 610 m a.s.l., Arunachal Pradesh, India.
Type: Holotype, ZSIC 17013.
Notes: The type specimen is badly dehydrated and requires the collection of fresh material to redefine
the species morphologically and assess its validity in relation to congeners.
IUCN status: Data Deficient (DD).

Original name: Rhacophorus microdiscus; Original Publication: Annandale, 1912. Rec. Indian Mus., 8: 13.
Last seen: 1912 (98 years): only from the original description based on a single specimen.
Type locality: Kobo, at base of Abor foot-hills (alt. 400 ft.)", 27°46’ N, 95°22’ E, 122 m a.s.l., currently located in Assam, India.
Type: Holotype, ZSIC 16924.
Notes: The collection of new material is necessary to verify current generic designation.
IUCN status: Data Deficient (DD).

Original name: Ixalus montanus; Original Publication: Gunther, 1876 “1875”, Proc. Zool. Soc. London, 1875: 574.
Last seen: 1876 (134 years): only from the original collection.
Type locality: “Kudra Mukh at an elevation of 6000 feet”, 13°12’ N, 75°16’ E, 1600 m a.s.l., Karnataka, India.
Type: Lectotype: NHM 1947.2.6.14.
Notes: Currently in synonymy of Raorchestes tinniens (Bossuyt and Dubois, 2001).
IUCN status: Not evaluated.

Original name: Philautus sanctisilvaticus; Original Publication: Das and Chanda, 1997. Hamadryad, 22: 21.
Last seen: 1962 (48 years): only from the original description based on three specimens.
Type locality: “Kapildhara Falls, Amarkantak (23°10′ N, 81°70′ E), ca. 190 km SE Jabalpur City, Shahdol, Jabalpur District”, Madhya Pradesh, India.
Type: Holotype, ZSIC A1778.
Notes: Though the species described in 1997, the type series was collected in 1962.
IUCN status: Critically Endangered (CR).

Original name: Philautus sahai; Original Publication: Sarkar and Ray, 2006. In Alfred (ed.), Fauna of Arunachal Pradesh, Part 1: 303.
Last seen: 1988 (22 years): only from the original description based on two specimens.
Type locality: "North bank of Noa Dihing River, c. 10 km. north of Gandhigram, . . . . Changlang district”, Arunachal Pradesh, India.
Type: Holotype, ZSIC A8500; Paratype, ZSI A8501.
Notes: Specimens collected in 1988 (18 years before the original description).
IUCN status: Data Deficient (DD).

Original name: Philautus terebrans; Original Publication: Das and Chanda, 1998. J. South Asian Nat. Hist., 3: 105.
Last seen: 1983 (27 years): only from the original description based on seven specimens.
Type locality: "Peddavalasa” 17°47′ N; 82°16′ E, ca. 1,000 m a.s.l., Vishakhapatnam, Andhra Pradesh, India.
Type: Holotype, USNM 239428.
Notes: Though the species was described in 1998 the collection of the holotype was in 1983 and
paratypes in 1877.
IUCN status: Data Deficient (DD)

Original name: Phrynoderma moloch; Original Publication: Annandale, 1912. Rec. Indian Mus., 8: 18.
Last seen: 1912 (98 years): only from the original description based on two specimens.
Type locality: "Upper Renging, Abor country”, 655 m a.s.l., 28°30' N, 95°00' E, Arunachal Pradesh, India.
Type: ZSIC 16951-52.
Notes: The collection of new material is necessary to verify current generic designation.
IUCN status: Vulnerable (VU).

Original name: Xenophrys monticola; Original Publication: Günther, 1864. Rept. Brit. India: 414.
Last seen: 1860 (150 years): only known from the original description based on two specimens.
Type locality: "Sikkim and from Khasya" 27°45’ N, 88°30’ E, and 25°07’–26°00’ N, 89°40’–92°09’ E, Meghalaya, India, respectively.
Type: NHM 60.3.19.1336.
Notes: This species is considered to be the same as Xenophrys parva but further work is necessary on this group (Mahony, unpublished). Published records appear to represent several different species.
IUCN status: Not evaluated.

Original name: Scutiger occidentalis; Original Publication: Dubois, 1978. Senckenb. Biol., 59: 164.
Last seen: 1977 (33 years): from the original description based on 89 specimens.
Type locality: "un torrent sous le village de Shukdhari, 2920-2940 m, près de Sonamarg, Cochemire” Jammu and Kashmir, India.
Type: Holotype: MNHNP 1977.1069, by original designation.
Notes: This species was reported by numerous authors prior to its description under different names. It is now considered locally extinct in Ladakh by Vasudevan et al. (2002, Frogleg, 10: 1-2). Currently considered a synonym of Scutiger nyingchiensis Dubois (1987. Alytes, 5: 19).

IUCN status: Not evaluated

Original name: Ichthyophis husaini; Original Publication: Pillai and Ravichandran, 1999. Rec. Zool. Surv. India. Occasional Paper, 172: 36.
Last seen: 1983 (27 years): only from the original description based on a single specimen.
Type locality: “Thebronggiri Coffee Garden, Rongram, Garo Hills”, 25°37’03’’ N, 90°14’11” E, 506 m a.s.l., Meghalaya, India.
Type: Holotype, ZSIS 18426.
Notes: It was collected by A. Husain in 1983 and described by Pillai and Ravichandran in 1999.
IUCN status: Data Deficient (DD).

Original name: Ichthyophis longicephalus; Original Publication: Pillai, 1986. Rec. Zool. Surv. India, 84: 231.
Last seen: 1979 (31 years): known from the original description based on a single specimen.
Type locality: Silent Valley, 11°13’ N, 76°28’ E, 1050 m a.s.l., Kerala, India.
Type: Holotype, VAG 1056 ZSIM.
Notes: An additional specimen was collected by R S Pillai in 1985, but it cannot be said with certainty if the second specimen belongs to the same species.
IUCN status: Data Deficient (DD).

Original name: Uraeotyphlus interruptus; Original Publication: Pillai and Ravichandran, 1999. Rec. Zool. Surv. India. Occasional Paper, 172: 60.
Last seen: 1992 (18 years): only from the original description based on two specimens.
Type locality: “Chengalam Village”, 09°35ʼ N, 76°29ʼ E, 506 m a.s.l., Kerala, India.
Type: Holotype, ZSI/SRS VAG 14; Paratype, ZSI/SRS VAG 15.
IUCN status:
Data Deficient (DD).

Original name: Cecilia malabarica; Original Publication: Beddome, 1870. Madras Monthly Jour. of Medical Sci. 2:175.
Last seen: 1870 (140 years): only from the original description based on a single specimen.
Type locality: "Malabar", from approximately 09°00ʼ–16°50′ N.
Type: Holotype, NHM 1874.4.29.181.
IUCN status: Data Deficient (DD).

Original name: Uraeotyphlus menoni; Original Publication: Annandale, 1913. Rec. Indian Mus. 9: 301.
Last seen: 1913 (97 years): only from the original description based on a single specimen.
Type locality: “…the southern part of the Malabar Zone, . . . Trichur in Cochin", between 08°15′– 09°15′ N and 76°32′–77°03′ E, Kerala, India.
Type: Holotype, ZSIC 16707.
IUCN status: Data Deficient (DD).

Original name: Uraeotyphlus oommeni; Original Publication: Gower and Wilkinson, 2007. Herpetologica, 63: 401.
Last seen: 1987 (23 years): only from the original description based on one specimens.
Type locality: "Bonaccord", 08°40’ N, 77°10’ E, 800 m a.s.l., Thiruvananthapuram, Kerala, India.
Type: Holotype, BNHS 4178.
Notes: Specimens collected in 1987 (20 years before the original description).
IUCN status: Data Deficient (DD).

Original name: Caecilia oxyura; Original Publication: Duméril and Bibron, 1841. Erp. Gen. Hist. Nat. Comp. Reptiles. 8: 280.
Last seen: 1841(169 years), only from the original description based on two specimens.
Type locality: "Côte du Malabar", from approximately 09°00ʼ–16°50′ N, India.
Type: MNHNP 4271.
IUCN status: Data Deficient (DD).