Species of the genus Trachischium are found through montane regions of the countries of Bangladesh, Bhutan, China, India, and Nepal.

Snakes of the genus Trachischium exhibit the following characters: head not distinct from neck; eye small, with vertically subelliptic pupil; nostril between two small nasals; prefrontals sometimes united; body cylindrical; dorsal scales smooth, in 13 or 15 rows, without apical pits; ventrals rounded; tail short; subcaudals divided; maxillary teeth 18–20, subequal; posterior mandibular teeth shorter than anterior; hypapophyses developed throughout vertebral column.

[2] There are 7 species in the genus Trachischium which are recognized as being valid.

[1] Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Trachischium.

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