from Tropical Africa. 525 



from the temporal crest to the root of the tail. Sometimes 

 one or two whitish bauds across tlie lower part of the temple. 



In the females the crests on the head are lower. 



A male measures 152 millim., the tail taking 75 milliin. ; 

 a mature female with fully developed ova is 102 millim., the 

 tail taking 47 millim. 



The fenude of G, bitivniatus is very similar to that of the 

 present species, but distinguished by much larger tuberclas ; 

 but the male of C. bilanintus differs greatly in having a very 

 high occi[)ital crest, covered with large scutes, and the extre- 

 mity of tlie snout raised into a knob. 



Grayia Smythii^ Leach (?). 



Only the head and tail of a specimen from Uganda have 

 been preserved ; they show no structural difFerenee from 

 West-Atrican specimens, but tlie coloration is peculiar; the 

 parts are black, the heail-shields and scales of the neck being 

 finely mottled with salmon-colour. 



Leptodira rufescens^ Gm.* 

 From the foot of lluwenzori. 



Boodon Ii7ientuSj var. biproeocularis^ Gthr. 

 Uganda, alt. 3900-4500 feet. 



Elapsoidea Guentheri^ Bocage. (PI. XXI. fig. C.) 



Two specimens were obtained. One on the lower slope of 

 lluwenzori ; it is half-grown and agrees perfectly with an 

 adult specimen from Stanley Pool belonging to the variety 

 figured by Bocage and described by him as var. C. Being of 

 immature age, it has the abdomen of a darker colour. 



The second specimen (see figure) is quite young and was 

 obtained in the iShird Highlands. It is deep black above and 

 below, with ten narrow white rings on the trunk, not reaching 

 across the abdomen, and two on the tail. Evidently these 

 rings disaj)pear with age, leaving their traces merely as the 

 paired faint whitish lines observed in adult specimens of 



* Coronella cana, L. 



This common South-African snako extends as far northwards as 

 Zomba ; but the simrlo specimen (adult) (which wjui collected by 

 Mr. Alex. Whyte) present? a siug-ular coloratiDii. Kaelj scale is black, the 

 peater portion of it beiiijr occupied by a yellow sjiot ; these spots vary 

 in their extent and position, producing thereby the appearance of an 

 irregular network of black lines. Scales in 27 series. 



