246 COLUBRID. 
Rostral large, a little broader than deep, the portion visible from 
above nearly as long as its distance from the frontal; internasals 
much broader than long, much shorter than the prefrontals ; 
frontal once and a half to once and two thirds as long as broad, 
longer than its distance from the end of the snout, shorter than 
the parietals; supraocular small; nasal divided or semidivided ; 
a very small postocular, sometimes fused with the supraocular; 
a single temporal; six upper labials, third in contact with the 
prefrontal, third and fourth entering the eye, fifth largest and 
in contact with the parietal; four lower labials in contact with 
the anterior chin-shields, fourth very large and narrowly separated 
from its fellow by the posterior chin-shields. Scales in 17 rows. 
Ventrals 173-208; anal divided; subcaudals 21-38. Uniform 
blackish brown. 
Total length 365 millim.; tail 27. 
West Africa. 
a. 3 (V. 182; C. 34). Sierra Leone. 
b. go (V. 178; C. 33). Niger. J. W. Crosse, Esq. [P.}. 
c. 9 (V. 208; C. 21). W. Africa. 
2. Calamelaps polylepis. 
Calamelaps polylepis, Bocage. Jorn. Se, Lisb. iv. 1873, p. 216, and 
Herp. Angola, p. 126, pl. ix. fig. 2 (1895). 
—— miolepis, Giinth. Ann, § Mag. N. H. (6) i. 1888, p. 323. 
In every respect like C. unicolor, except that the scales are in 
21 rows. Ventrals 163-212; subcaudals 16-27. 
Total length 400 millim.; tail 23. 
Angola, Nyassaland. 
a. 2 (V. 208; C. 18). yar McLear, Lake A. A. Simons, Esq. [C.]. 
yassa. (Type of C, mioleprs.) 
3. Calamelaps? concolor. 
Stes concolor, Smith, Ill. Zool. 8. Afr., Rept., App. p. 18 
). 
Rostral triangular; internasals small; frontal subrhomboidal, 
the hinder portion most prolonged; supraocular very small, sub- 
triangular, forming the supero-posterior border of the eye; post- 
ocular very small; third and fourth upper labials entering the eye; 
two pairs of narrow chin-shields, the second pair longest. Scales 
in 13 rows. Ventrals 134; subcaudals 38, Greenish black above, 
with purple gloss; pale blackish purple beneath, the shields mar- 
gined behind with livid white. 
Total length 190 millim.; tail 28. 
Caffraria. 
