470 VIPERIDA, 
spots; a large A-shaped dark brown marking on the occiput, the 
point on the frontal; an oblique dark streak behind the eye; upper 
labials black-edged; yellowish white beneath, uniform or with 
small greyish-brown spots. 
Total length 400 millim. ; tail 22. 
East and Central Africa, Transvaal. 
a, 3 (V. 120; C. 14), Ugogo. Capt. Speke [P.]. 
(Type of C. rostratus.) 
b. og (V.117; C. 16). Rabai hills, Mombas. a W. E. Taylor 
e-d. § (V. 118; ©.17) Zomba, Brit. ©. Sir if H. Johnston 
& Q (V. 125; O. 12). Africa. [P 
e. ¢ (V. 128; C. 15). Shiré highlands. is ; H. Johnston 
f. 9 (V.120; C.10). | Murchison Range, ©. R. Jones, Esq- 
Transvaal. 
g. 3d (V. 119; C.16). Barberton, Transvaal. S. African Mus. [P.]. 
4. Causus lichtensteinii, 
“From. Ge lichtensteinii, Jan, Rev. § Mag. Zool, 1859, i}. 511, and 
con. Gién. a pl. vi. fig. 5 (1873); Mocg. Bull. Soc. Philom. (7) 
xi. 1887, p. 8 
Causus Tphbeneseiutid, Dum. Arch, Mus. x. 1859, p. 217 ; Stejneger,, 
Proc. U.S. Nat. Mus. xvi. 1893, p. 736. 
Dinodipsas angulifera, Peters, Sitzb. Ak. Berl. 1882, p. 893, pl. xv. 
Snout obtuse. Rostral a little broader than deep, obtuse-angled 
above, its upper portion not half as long as its distance from the 
frontal ; internasals longer than the prefrontals, separated from the 
loreal; frontal once“and one third as long as broad, as long as its. 
distance from the end of the snout, as long as the parietals; two 
preoculars, two postoculars, and one or two suboculars separating 
the eye from the labials; temporals 2+3; six upper labials ; 
four lower labials in contact with the anterior chin-shields ; posterior 
chin-shields very small. Scales in 15 rows, dorsals feebly keeled. 
Ventrals 142-144; analentire; subcaudals 15-21, single. Greyish 
above, with rather indistinct darker chevron-shaped cross-bands- 
pointing forwards. 
Total length 413 millim.; tail 35. 
West Africa (Gold Coast, Congo). 
2. AZEMIOPS. 
—— Bouleng. Ann. Mus. Genova, (2) vi. 1888, p, 602, and 
aun. Ind., Rept. p. 418 (1890). 
Head distinct from neck, covered with symmetrical shields ; nostril 
in a single nasal; loreal present ; eye moderate, with vertical pupil. 
Body cylindrical; scales smooth, in 17 rows; ventrals rounded, 
Tail short; subcaudals in two rows, 
Upper Burma. 
