BATRACHIANS FROM EAST AFRICA. 



length of body. Length from snout to vent 31 times length of 

 head. Skin smooth, dotted with minute white tubercles each 

 bearing a minute black spine, on upper surfaces of head, body, 

 forearm, tibia, and hinder side of tarsus. Smooth beneath ; 

 throat granular ; some small warts at corners of mouth. Pale 

 brown above, with a faintly marked band, commencing on snout 

 and progressively widening on the back. Uniformly speckled 

 on upper surfaces with black pigment cells, which are slightly 

 concentrated along the canthus rostralis ; lower surfaces pale 

 brown. 



Measurements in millimetres. 



Snout to vent 36 



Head 11 



Width of head 11-5 



Snout 4-5 



Interorbital width 3*5 



1st finger 4 



2nd „ 5 



3rd „ , 8-5 



4th „ 6 



Hind limb 52 



Tibia 18 



Foot 23 



The closest affinity of this species is M. fornasinii Bianconi, 

 which it resembles in dermal characters, but which differs in 

 having the fingers I to -j webbed and shorter, especially the 

 third, which is 1^ times length of first. It is also less elongate 

 in habit, the length from snout to vent being little over 3 times 

 the length of the head. 



Casstna. 



23, Cassina sexegalensis D. & B. 

 Nairobi. Ex-^G.E.A. 



3 specimens. Length 29, 39, and 40 mm. 



Male specimens from Nairobi have a vertebral and two paired 

 series of dark elongated spots; female from Ex-G.E.A. has five 

 unbroken dark bands. The former have the tips of the digits 

 much swollen, almost amounting to small discs as in Hylamhates \ 

 specimens in the British Museum collection from the same 

 locality show the same variation. 



Hylambates. 



24. Hylambates bocagii Gthr. 

 Nairobi. 



3 specimens. Length 26, 31, and 35 mm. 



Skin slightly granular above, with a linear vertebral groove. 

 Upper parts uniform dark grey. 



Proc. Zool. Soc— 1920,Vo. XXVIII. 28 



