10. rroprponotus. 
2. Scales in 19 rows, 
a, Usually a single anterior temporal. 
a. Usually 7 upper labials, third and fourth entering 
the eye. 
Ventrals 157-190 a 18. natriz, p- 219. 
Ventrals 127-151 ee | 19. vibakari, p- 221. 
8. 8 or 9 upper labials, three entering the eye. [p. 222, 
Ventrals 138-147; subcaudals 40-53 .... 20. conspicillatus, _ 
Ventrals 163-175; subcandals 73-95.... 21. —— p. 223. 
Ventrals 150-154; subcaudals 80-100 .. 22. hasiensis, p. 223. 
b. Two anterior temporals ; 9 upper labials, fourth to sixth 
entering the eye. 
1 Frontal once and a half to once and three [p. 224. 
, fourths as long as broad.............. 23. trianguligerus, 
+ Frontal once and one third as long as broad.. 24. petersii, p. 225. 
. ' 
4 
\ 
J 
IL. Maxillary teeth not more than 30, the hinder gradually enlarged ; 
eyes rather small and, like the nostrils, directed upwards and 
+ outwards ; internasals usually much narrowed in front, 
: : (Nerop1a.) zr 
—_— % 
; A. Anal single ; a single anterior temporal; scales in 19 * 
+ rows. [p. 295. ‘ Sas 
’ Seales strongly keeled ............++.. 25. melanogaster, as 
ES eee eee 26, levissimus, p. 226, 
B. Anal divided. 
1. Scales smooth or feebly keeled, in 17 or 19 rows. 
Scales smooth, in 19 rows; a single ante- 
de SNEED du 510: tisip sie ob. kasdgeie Ap 27. olivaceus, p. 227. 
Scales smooth or faintly keeled, in 17 rows; a 
a single anterior temporal.....-...... - Pygeus, p. 228. 
Scales smooth or faintly keeled, in 17 rows ; oe 
two anterior temporals.............. 29. punctulatus, p. 228. 
Seales feebly keeled, in 19 rows; three labials : 
entering the eye.......0seseeeeeeess 30. modestus, p. 228, 
, Scales feebly keeled, in 19 rows ; ; one or [p. 230. 
two labials entering the eye..... -++.. SL. sanetijohannis, 
2. Scales in 19 rows, strongly keeled; usually two anterior 
temporals ; 4th, 5th, or 4th and 5th labials entering the 
% eye; ventrals not more than 161. 
“ Scales of 2 or 3 outer rows smooth ...... 32. gine p. 230. 
