PSAMMOPHIS SIBILANS. 
305 
Measurements (millim.) &c. q/'P. sibilans, Linn. 
Sex. 
Total 
length. 
Tail. 
Ven- 
trals. 
Anal 
Cau- 
da Is 
Scales. 
Upper 
labials. 
Labials 
entering 
orbit. 
Eelation 
of prse- 
oculars to 
frontal. 
Temporals 
in contact 
with post- 
oculars. 
Numbei 
of 
nasals. 
Locality. 
d 
1000 
320 
165 
VI 
103 
17 
8 
4&5 

2 
2 
Beltim. 
d 
970 
310 
170 
1/1 
114 
17 
8 
4&5 

2 
2 
Delta. 
2 
902 
260 
165 
1/1 
17 
S 
4&5 

2 
2 
Mahallet el Kebir. 
2 
655 
210 
168 
1/1 
109 
17 
8 
4&5 
c. 
2 
2 
>> 
d 
1036 
280 
166 
Vi 
17 
8 
4&5 
c. 
2 
2 
Abbasiyeh. 
d 
102S 
296 
167 
1/1 
91 
17 
8 
4&5 
c. 
2 
2 
Abu Eoash. 
d 
975 
300 
164 
1/1 
108 
17 
8 
4&5 

2 
0.1, E.2 
» 
d 
478 
167 
1/1 
17 
L. 9,B. S 
L. 5&fi 
E.4&5 

2 
2 
.. 
2 
970 
229 
158 
1/1 
17 
S 
4&5 

2 
2 
„ 
2 
640 
195 
165 
1/1 
108 
17 
8 
4&5 
c. 
2 
L.3.R.2 
Gizeh. 
2 
460 
138 
173 
1/1 
106 
17 
L.8.E.9 
4&5 
c. 
2 
2 
» 
d 
855 
265 
167 
1/1 
109 
17 
9 
5&6 
c. 
L.3, E.2 
2 
Fayum. 
d 
843 
259 
159 
1/1 
103 
17 
8 
4&5 

2 
2 
» 
2 
845 
270 
166 
1/1 
109 
17 
8 
4&5 

2 
2 
„ 
cf 
1205 
390 
167 
1/1 
116 
17 
L.9.E.8 
L. 54 6 
E. 4&5 

2 
2 
Minia. 
d 
777 
167 
1/1 
17 
8 
4&5 
c. 
2 
2 
,. 
2 
645 
169 
1/1 
114 
17 
L.8.E.9 
L. 4&5 
B. 5&6 

2 
2 
» 
d 
1131 
385 
166 
1/1 
108 
17 
S 
4 & 5 

2 
2 
Tel el Amarna. 
2 
885 
145 
171 
1/1 
17 
8 
4&5 

2 
2 
„ 
2 
967 
322 
172 
1/1 
114 
17 
• 9 
5&6 
c. 
2 
2 
Luxor. 
This essentially African species is widely distributed over the continent, from Cape 
Guardafui to Cape Verd, southwards to the Zambesi and to Angola, and northwards 
along the Nile valley to the coast of the delta. It is one of the most common snakes 
in Egypt, and Gasco 1 justly says that in this respect it is on a par with Zamenis 
florulentus. It occasionally enters houses. 
Viagg. in Egitto, pt. ii. 1876, p. 120. 
2e 
