The species was originally described as Alecto bitorquata by Giorgio Jan in 1859.[6][7]
Description
H. bitorquatus may attain a total length of 90 cm (35 in), which includes a tail 9.5 cm (3.7 in) long. The top of the head is pale olive, with a bright yellow occipital blotch, which is edged with black. The body is dark olive dorsally, and may have a darker vertebral streak. Ventrally, it is greyish olive or brown.[3]
^ abBoulenger GA (1896). Catalogue of the Snakes in the British Museum (Natural History). Volume III. Containing the Colubridæ (Opisthoglyphæ and Proteroglyphæ) ... London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xiv + 727 pp. + Plates I–XXV. (Hoplocephalus bitorquatus, pp. 349–350).