Assam keelback

Assam keelback
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Reptilia
Order:Squamata
Suborder:Serpentes
Family:Colubridae
Genus:Hebius
Species: H. pealii
Binomial name
Hebius pealii
(Sclater, 1891)
Synonyms[1]
  • Tropidonotus pealii
    Sclater, 1891
  • Natrix pealii
    — Wall, 1923
  • Paranatrix pealii
    — Mahendra, 1984
  • Amphiesma pealii
    — Das, 1996
  • Hebius pealii
    — Guo et al., 2014
  • Amphiesma pealii
    — Wallach et al., 2014

The Assam keelback (Hebius pealii) is a species of natricine snake endemic to India.

Etymology

The specific name, pealii, is in honor of Samuel E. Peal (died 1897), an ethnographer and tea planter in Assam, who collected the two specimens from which British zoologist William Lutley Sclater described this snake as a species new to science.[2]

Geographic range

It is found in the Indian state of Assam. It has also been recorded in bordering regions of Assam.

Description

It may attain a total length of 50 cm (19⅝ inches), which includes a tail 12.5 cm (4⅞ inches) long.

Dorsally it is dark brown. On each side are two light stripes, an upper narrow one, and a broader lower one, which is two scales wide. The top of the head is dark brown. The rostral, the upper labials, and the lower labials are yellow, blotched and edged with brown. The ventrals are very dark brown, marked with light yellow laterally. There is also a faint yellow stripe along the center of the ventrals, which becomes more distinct posteriorly.

The dorsal scales are strongly keeled (less strongly in the outermost row), and arranged in 19 rows at midbody. Ventrals 142-144; anal plate entire; subcaudals 75-77, divided.[3]

References

  1. ↑ "Hebius pealii ". The Reptile Database. www.reptile-database.org.
  2. ↑ Beolens B, Watkins M, Grayson M (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Amphiesma pealii, p. 202).
  3. ↑ Boulenger GA (1893). Catalogue of the Snakes in the British Museum (Natural History). Volume I., Containing the Families ... Colubridæ Aglyphæ, Part. London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xiii + 448 pp. + Plates I-XXVIII. (Tropidonotus pealii, pp. 214-215).

Further reading

  • Sclater WL (1891). "Notes on the Collection of Snakes in the Indian Museum with descriptions of several new species". J. Asiat. Soc. Bengal 60: 230-250. (Tropidonotus pealii, new species, p. 241 + Plate VI, figures 4a, 4b, 4c).
  • Smith MA (1943). The Fauna of British India, Ceylon and Burma, Including the Whole of the Indo-Chinese Sub-region. Reptilia and Amphibia. Vol. III.—Serpentes. London: Secretary of State for India. (Taylor and Francis, printers). xii + 583 pp. ("Natrix peali [sic]", p. 291).


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