171. PsAMMOPHIS, 153 
¥ 
Skull of Psammophis schokari. 
Synopsis of the Species. 
I. Scales in 17 rows, exceptionally 19. 
A. Rostral a little broader than deep, well visible from above. . 
1, Anal entire; eight upper labials, fourth and fifth entering 
the eye. 
One presocular; five lower labials in 
» contact with the anterior chin-shields; 
¥ ventrals 170-185; subcaudals 92-97 .. 1. leithii, p. 155. 
Two preoculars; four lower labials in 
coatact with the anterior chin-shields ; 
ventrals 157-171; subcaudals 81-104. 2. notostictus, p. 156. 
2. Anal divided. 
a. Five or six lower labials in contact with the anterior 
chin-shields ; usually nine upper labials, fifth and sixth 
entering the eye ; preocular in contact with the frontal ; 
ventrals 162-197. 
Sixth upper labial shorter than the eye, 
which is more than half the length of 
the snout; subcaudals 93-149 ...... 3. schokari, p. 157. 
Sixth (exceptionally fifth) upper labial as 
long as the eye, which is more than half 
