92 COLUBRID. 
Maxillary teeth 20 to 25, posterior longest ; mandibular teeth 
subequal. Head more or less elongate, distinct from neck; eye 
large or rather large, with round pupil. Body cylindrical ; scales 
smooth, with apical pits, in 15 rows, disposed obliquely, at least on 
the anterior part of the body; ventrals rounded or more or less 
distinctly keeled on each side, the keel not extending to the sub- 
caudals. ‘Tail long or rather long ; subcaudals in two rows. 
Tropical and South Africa. 
Synopsis of the Species. 
I. No trace of ventral keels, 
Three labials (fourth, fifth, and sixth) ; 
entering the eye; subcaudals 111-122. 1. emini, p. 92. 
Three labials (third, fourth, and fifth) 
entering the eye; subcaudals 85-99.. 2. ornatus, p. 93. 
Two labials entering the eye ; subcaudals 
See A: ieee Leh. » USO ae nts ate catatahet er 3. hoplogaster, p. 93. 
II. Ventrals more or less distinctly keeled on the sides. 
A. Anal divided (rarely entire). 
1. Two labials entering the eye. 
Fourth and fifth labials entering the eye ; 
a single anterior temporal; subcaudals 
(Gig. Bree ae on nee: 4. neglectus, p. 94. 
Fourth and fifth labials entering the eye; 
usually two superposed anterior tem- 
porals; subcaudals 114-124........ 5. natalensis, p. 94. 
Fifth and sixth labials entering the eye ; 
pupcandals, 9O—LO0 vit sists whe cheno’ oye 6. angolensis, p. 95. 
2. Three labials entering the eye. 
Ventrals 175-190; subcaudals 115-135; 
temporals 1+1,; body very slender 
EREEDOELOTIY ci sie aise. «7ete ich Steck ree 7. heterolepidotus, p. 95. 
Ventrals 150-182; subcaudals 94-133 ; 
temporals usually 1+2............ 8. wregularis, p. 96. 
B. Anal entire ; subcaudals 78-92; three labials entering the 
OR ee as )iinie ane oc se er 9. heterodermus, p. 97. 
1. Chlorophis emini. (Puare V. fig. 1.) 
Aheetulla irregularis, part., Giinth. Ann. § Mag. N. H. (8) xi. 1863, 
p- 285. 
emini, Giinth. Ann. § Mag. N. H. (6) i. 1888, p. 825. 
Rostral a little broader than deep, the portion visible from above 
measuring one third its distance from the frontal; internasals a 
little shorter than the preefrontals; frontal once and a half to once 
and two thirds as long as broad, a little longer than its distance 
from the end of the snout, a little shorter than the parietals ; loreal 
