On a new Species of Zamenis from Egypt. 439 
LXII.—On a new Species of Zamenis and a new Species of 
Bufo from Egypt. By Dr. Joun ANDERSON, F.R.S. 
Zamenis Rogers. 
This snake is allied to 7. rhodorhachis, Jan, but differs 
from it in its body being less slender, the number of ventral 
and subeaudal shields falling below the range that occurs in 
that species, in which the “former shields vary from 214 to 
262 and the latter from 113 to 154, whereas in Z. Rogers 
the ventrals, in five specimens, range only from 195 to 201, 
and the subcaudals from 95 to 105. It is also disting niga 
from Z. rhodorhachis, Jan, by the rostral shield being con- 
siderably broader than high, as its height only equals about 
one half of its breadth; whereas in Z. rhodorhachis the height 
of the rostral equals two thirds of its breadth or even more. 
The head of Z. Rogerst is broader than in Z. rhodorhachis, 
and its snout is not so pointed as in that species. The frontal 
is considerably longer than the interval between its anterior « 
margin and the end of the snout. The temporals are 2+2, 
rarely 2+3, which is the reverse of what occurs in the species 
just mentioned. In the other details of its head-shields, with 
the exception of the prefrontals, which are occasionally 
united into one shield (two specimens from Shaloof, near 
Suez), and in the number of scales round the body it resembles 
Z. rhodorhachis. 
It is also separated from Jan’s Zamenis by its coloration. 
A longitudinal line of moderately large, more or less round, 
olive-brown spots commences behind the head, with a lateral 
series of smaller spots alternating with them. The two 
series, as they are traced backwards, become confluent about 
the middle of the length of the snake, behind which the colour 
of the upper surface is uniform olive-brown or nearly so. 
The spots are separated from one another, and also the more 
or less transverse bands formed by their confluence, by narrow 
yellowish-white areas. ‘The upper surface of the head is 
brown, with very obscure dark markings. ‘The rostral region 
is yellowish orange-brown, and a narrow somewhat obscure 
dark band occurs behind the nostril, followed by a bright 
yellow, almost orange, band before the eye. A dark oblique 
band below the eye. An orange band occurs behind the eye, 
succeeded by a broad dusky band crossing the temporals and 
the last upper labials, with a short yellow band behind it. 
The sides of the neck are suffused with orange. The under- 
parts are yellowish white. A somewhat obscure dusky spot 
occasionally occupies the angle of every third or fourth 
