THE SNAKES OF BRITISH EAST AFRICA 51 
edged vertebral band and another on each side, passing through 
the eye ; head lineolated with blackish ; upper lip blackish ; 
lower parts with brown longitudinal lines disposed in pairs. 
Found at Mombasa and East Kikuyu. 
Genus Trimerorhinus — 
Tritaeniatus. — Total length 2 feet 5| inches. Tail 
5J inches. Greyish or pale brown above, with two or three 
dark-brown, black-edged bands originating on the head and 
extending to the end of the tail, the outer passing through the 
eye, the vertebral sometimes rather indistinct or absent ; a 
fine yellowish line sometimes divides the vertebral band ; 
the sides below the bands white, with a pale brown or red 
streak running along the outer row of scales ; upper lip and 
lower parts white. Found in Kibibi basin, East Africa. 
Genus Bhamjphio'phis — 
Bubro'punctatus. — Total length 3 feet 3| inches. Tail 
1 foot 1J inches. Brown or reddish-brown above, uniform 
or dotted with red ; head reddish, without dark markings ; 
upper lip and lower parts yellowish. Found at Kilimanjaro. 
Genus Psammo'phis — 
Punctulatus. — Total length 5 feet 5 inches. Tail 1 foot 
10§ inches. Yellow or brownish-white above, greenish or 
greyish on the sides, and beneath head and nape olive grey or 
reddish speckled with black ; then black stripes along the body, 
the median broadest and bifurcating on the neck, its branches 
extending, as brown streaks to the end of the snout after 
passing through the eyes ; the stripes on the body may be 
reduced to vertebral. 
Sibilans. — Total length 3 feet 11 J inches. Tail 1 foot 
4 inches. Coloration very variable. 
Specimen found at Kilimanjaro. — Brown above, with 
lateral streaks and head markings ; vertebral line absent or 
reduced to a serial of yellow dots, one on each scale ; upper 
lip with brown or black dots ; lower parts, including lower 
half of outer row of scales, white, with a continuous or inter- 
rupted black longitudinal line on each side of the belly. 
Specimen found at Kilifi. — Uniform brown above, with 
