248 COLUBRID. 
rows of small brown spots along the back ; uniform whitish 
inferiorly. 
Total length 300 millim. ; tail 43. 
South Africa. 
a. 9 (V. 164; C. 24). Durban, Natal. Capt. Munn [P.]. 
b. Her. (V. 155; C. 25). Orange R. Dr. Kannemeyer [P.]. 
ce. fo (V. 154; C. 88). S. Africa. (Type of Rhinostoma cupreum.) 
d-e, f-h. 3 (V. 144; C. 5S. Africa: ~ . 
28), 2 (V. 161 ;-C723); 
& hgr. (V. 180, 128, 
135; C. 28, 27, 28). 
2. Prosymna frontalis. 
Temnorhynchus frontalis, part., Peters, Mon. Berl. Ac. 1867, p. 236, 
pl. —. fig. 1 
Prosymna frontalis, Bocage, Jorn. Se. Lisb. iv. 1878, p. 217, and viii. 
1882, p. 288. 
Closely allied to P. sundevalliz, but frontal smaller, not half the 
width of the head, rostral smaller and separated from the pre- — 
frontal by a single band-like internasal, temporals 1+ 2, and tail 
more elongate. Ventrals 167; subcaudals 50. 
Total length 135 millim.; tail 57. 
Otjimbingue and Mossamedes, 8.W. Africa. 
3. Prosymna ambigua. 
Prosymna ambiguus, Bocage, Jorn. Sc. Lis6. iv. 1873, p. 218. 
Ligonirostra stuhlmanni, Pfeffer, Jahrb. Hamb. Wiss. Anst. x. 1895, 
p- 78, pl. i. figs. 8- 10. 
Rostral very large and broad, with angular horizontal edge; a 
single internasal and a single prefrontal ; frontal large, more than 
half the width of the head, a little longer than the parietals ; loreal 
longer than deep ; one pre- and two postoculars; temporals 14+2; 
six or seven upper labials, third and fourth entering the eye; only 
one pair of well-developed chin-shields. Scales smooth, in 16 or 
17 rows. Ventrals 133-152; anal entire; subcaudals 19-34. 
Blackish above, each scale usually greyish in the centre; lower 
parts whitish or brown. 
Total length 255 millim.; tail 27. 
East Africa, Angola. 
a-k. 3 (V. 134, 137,188; Zanzibar. Sir J. Kirk (C.]. 
C. 32, 31, 34), 9 (V. 
150, 141, 151; C. 24, 
19, 21), hgr. (V. 187, 
140, 140; C. 24,21, 20), 
& yg. (V. 152; C. 22), 
l, Ad., bad state. Shiré Valley, Zambezi. 
