Reptiles and Batracliians. 5 



are uniform lightgrey. The dark dorsal band with the vertebral 

 light narrow streak is yet to be found in this specimen. 



13. Naja haje L. 4 specimens bought in Cairo. 



N:o 1 total length 1530 mm, tail 225 mm, v. 200, c. 60. 



„ 2 „ „ 1520 „ „ 230 „ v. 197, c. 58. 



„ 3 „ „ 1380 „ „ 212 „ v. 201, c. 56. 



„ 4 „ „ 700 „ „ 120 „ v. 194, c. 60. 



Scalerows in all specimens 21. 



In all specimens the colour is the same, uniform yellowish 

 above, ligther below, with a dark band on the throat. 



14. Naia nigricollis Reinh. One specimen. Khartoum. Feb- 

 ruary or March 1901. 



Total length 1350 mm, tail 220 mm, v. 219, c 69. Scales 25. 



15. Cerastes vipera L. 9 specimens bought in Cairo. 



N:o 



Mr John Anderson states 345 mm as the maximal length 

 of this snake from Egypt, and Boulenger mentions 340 mm; 

 as has been pointed out, nearly all of these 9 specimens exceed 

 this measurement and most of them do so in a very high degree. 

 According to J. Anderson the greatest number of the ventrals 

 in Egyptian specimens is 119; four of these snakes have 120 

 and 121. 



16. Cerastes cornutus L. 2 specimens. N:r 1 from the in- 

 terior of the Sinaitic Peninsula. N:r 2 bought in Cairo. 



N:o 1 total length 490 mm, v. 140, c. 31, without horns. 

 „ 2 „ „ 650 „ v. 148, c. 34, with horns. 



17. Echis coloratus Gntr. One specimen. Wadi Feiran'; in- 

 terior of the Sinaitic Peninsula. June. Total length 455 mm., 

 v. 196, c. 53. 



