10. rRoprponotvs. 227 
above ; nostrils directed upwards; internasals narrow, shorter than 
the prefrontals; frontal twice as long as broad, longer than its 
distance from the end of the snout, shorter than the parietals ; loreal 
longer than deep; one pre- and two postoculars; temporals 1+2; 
eight upper labials, fourth and fifth entering the eye; four lower 
_labials in contact with the anterior chin-shields, which are shorter 
than the posterior. Scales perfectly smooth, in 19 rows. Ventrals 
175; anal entire; subcaudals 76. Black, ventrals and subcaudals 
yellowish on the sides. 
Total length 850 millim.; tail 200. 
Africa? 
a. dg (V.176; C. 76). ——? Chatham Museum. (Type.} 
27. Tropidonotus olivaceus. 
Coronella olivacea, Peters, Mon. Berl. Ac. 1854, p. 622; Giinth. Cat. 
p. 39 (1858) ; Bocage, Jorn. Sc. Lish. i. 1866, p. 66; Peters, Reise 
n. Mossamb. iii. p. 114, pl. xvii. fig. 1 (1882); M d, Bull. 
Soc. Philom, (7) xi, 1887, p. 66, and Mém, Cent. Soc. Philom, 1888, 
. 128. 
ak (Meizodon) dumerilii, Giinth. Proc. Zool. Soc. 1860, p. 429, 
i athus punctatostriatus, Jan, Arch. Zool. Anat. Phys, ii. 1863, 
8, and Icon. Gén, 16, pl. iv. fig. 4 (1866). 
Neusterophis atratus, Peters, Mon. Berl. Ac. 1877, p. 614, pl. —. 
fig. 1; Giinth. Proe, Zool. Soc, 1888, p. 51. 
Coronella (Mizodon) olivacea, Boettg. Ber. Senckenb, Ges, 1888, 
p. 48. 
Eye moderate. Rostral a little broader than deep, visible from 
above ; internasals as long as broad, as long as or a little shorter 
than the prefrontals; frontal once and two thirds to twice as long 
as broad, longer than its distance from the end of the snout, 
shorter than the parietals; loreal as long as deep or deeper than 
long; one (rarely two) prw- and three (exceptionally two) post- 
oculars; temporals 1+2; eight upper labials, fourth and fifth 
entering the eye; four or five lower labials in contact with the 
anterior chin-shields, which are shorter than the posterior. Scales 
in 19 rows. Ventrals 131-149; anal divided; subcaudals 55—85. 
Olive or brown above, with a more or less distinct darker vertebral 
band, four or five scales wide, bordered on each side by a series of 
whitish dots; flanks and ends of ventrals olive; upper lip yellowish, 
the sutures between the shields black; ventrals yellowish, some- 
times edged with olive. 
Total | 580 millim.; tail 145. 
Tropical Afri 
a-b, c. § (V.188;C.?), South of Chartoum. Consul Petherick 
V. 186; ©. i [C.} 
& yg. (V.181; 0.71). 
a2 
