4, BITIS. 497 
the chin-shields. Scales in 27—29 rows, all keeled. Ventrals 126- 
140; subcaudals 19-26. Markings, if present, as in B. cornuta. 
Total length 350 millim.; tail 30. 
Cape of Good Hope. 
A. Dark yellowish brown above, with faint traces of darker markings, 
brownish yellow beneath with a few dark dots; head marbled 
with dark brown. (£. inornata, Smith.) 
a. 9 (Se. 29; V.140; C.26). Snow Mountains, near Sir A. Smith 
Graaf Reynet. [P.]. (Type.} 
B. Brown above, with two dorsal series of dark brown, black-edged 
spots. (V. atropoides, Smith.) 
a. 2 (Se. 27; V.126;C. 20). 40 miles E. of Cape Sir A. Smith 
Town. [P.]. (Type.) 
b. 2 (Sc. 29; V.131;C.19). S. Africa. 
5. Bitis cornuta. 
Paterson, Narr. Journ. Hott. Caffr. 's 161, pl. — (1789). 
Vipera cornuta, Daud. Rept. vi. p. 188 (1803) ; Schleg. Phys. Serp. ii. 
p. 582, pl. xxi. figs. 8 & 9 (1837) ; Smith, Ill. Zool. 8. Afr., Rept. 
pl. xxxil. (1843); Strauch, Syn. Viper. p. 100 (1869); Boettg. Ber. 
Senck. Ges. 1887, p. 168. 
—— armata, Smith, Edinb. N. Philos, Journ, i. 1826, p. 251. 
—— lophophris, Cuv. R. A. 2nd ed. ii. p. 92 (1829); Smith, Ill. 
ies lista” Rept. pl. xxxiii. (1843) ; Jan, Icon. Gén. 45, pl. v- 
g. 2 (1874). 
Cerastes cornuta, Gray, Zool. Miscell. p. 70 (1842). 
Clotho cornuta, Gray, Cat. p. 27 (1849). 
pevenry lophophrys, Dum. § Buibr. vii. p. 1444, pl. Ixxviii. d. fig. 4 
(1854). 
Nostrils turned upwards and outwards. Rostral small, twice to 
twice and a half as broad as deep; head covered with small, imbri- 
cate, strongly keeled scales, 12 to 17 across the vertex from eye to 
eye; two to five scales above the eye raised, horn-like; 12 to 14 
scales round the eye; three or four series of scales between the 
eye and the labials ; two or three series of scales between the supra- 
nasals ; two or three series of scales between the nasal and the 
rostral; 12 to 15 upper labials; two or three lower labials in 
contact with the chin-shields. Scales in 25-29 rows, strongl 
keeled, outer row smooth or feebly keeled. Ventrals 120-152; 
anal entire; subcaudals 18-36, well developed in the males, scale- 
like and more or less distinctly keeled in the females. Greyish or 
reddish brown above, with dark brown spots, often edged with 
whitish, disposed in three or four longitudinal series, with or without 
light spots between them; head with more or less distinct sym- 
metrical markings; an oblique dark streak from the eye to the 
mouth; yellowish white or brownish beneath, uniform or spotted 
with dark brown. 
VoL. II, 2x 
