96 VENOMS 
Total length, 490 millimetres ; tail 70. 
Habitat : Western Australia. 
(m) Acanthophis (Death Adder). 
(Figs. 60, 61.) 
Maxillary bones extending forwards as far as the palatines, 
with a pair of large grooved poison-fangs, followed by two or three 
small teeth; anterior mandibular teeth elongate, fang-like. Head 
distinct from the neck; eyes small, with vertically elliptic pupils ; 
nostril in the upper part of a single nasal shield. Body stout, 
Fic. 60.—SKuLL of Acanthophis antarcticus. (After G. A. Boulenger, op. cit.) 
cylindrical. Scales more or less distinctly keeled, in 21—23 rows. 
Tail short, compressed at the end and terminating in a sort of 
long spine, turned upwards; anterior subcaudais in a single row, 
posterior in 2 rows. 
A. antarcticus (The Death Adder ; fig. 61).—Supraocular shields 
often raised and angular, assuming the shape of little horns; scales 
on the crown of the head rugose and striated ; 113—130 ventrals 
41—51 subcaudals (the last 5—27 are divided). 
