1887.] BATRACHIANS FROM WEST AFRICA. 565 



is a little more than half that of the tympanum ; first finger shorter 

 than second ; toes with a sHght rudiment of web ; subarticular 

 tubercles rather feeble, oval ; a single, oval, flat, inner metatarsal 

 tubercle. The tibio-tarsal articulation reaches the tip of the snout. 

 Skin granulate above and on the sides, smooth inferiorly ; scattered 

 larger warts on the hody. Grey-brown above, with dark brown 

 spots on the head and body and cross bands on the limbs ; a 

 broad, dark cross band between the eyes ; a dark brown streak from 

 the nostril to the eye ; lower surfaces flesh-coloured. 



From snout to vent 31 millim. 



A single female specimen. 



The discovery of a species of Cornufer in Africa is particularly 

 interesting. Peters has, it is true, previously referred a West-African 

 frog to this genus {Petropedetex cameronensis, Reich.) ; but on ex- 

 amination of the type specimens in the Berlin Museum I find that 

 that species may best be referred to Rana,' so fiar as I can judge 

 without examining the pectoral arch. The toes are half- webbed 

 and the web widely separates the outer metatarsals. 



5. BuFo TUBEROsus, Gthr. 



6. BuFO suPERciLiARis, sp. n. 



Crown without bony ridges ; sides of head nearly vertical ; snout 

 very short ; upper eyelid with projecting angular edge, with a ten- 

 dency towards developing a horn as in B. ceratophrys, Blgr. ; inter- 

 orbital space flat, a little narrower than the upper eyelid ; tympanum 

 small and very indistinct. First finger longer than second ; toes 

 short, with a very short basal web ; subarticular tubercles simple ; 

 two moderate metatarsal tubercles ; a tarsal fold. The tibio-tarsal 

 articulation reaches the angle of the mouth. Upper parts smooth or 

 with very small warts ; parotoids narrow and prominent, about as 

 long as their distance from the nostril, tapering posteriorly to a point 

 continuous with a dorso-lateral glandular ridge which is lost halfway 

 down the side. Back and upper surface of head pale brownish, 

 yellowish, or pink ; a dark, usually deep black, chevron-shaped 

 marking between the eyes, pointing backwards ; sometimes one or 

 two pairs of black spots on the back ; sometimes a very fine lighter 

 vertebral line ; sides of head and body dark, grey or brown, forming a 

 sharp contrast with the light colour of the upper parts ; the boundary 

 between the two colours runs along the canthus rostralis, the edge 

 of the upper eyelid, the parotoid, and the lateral fold ; limbs above 

 grey or brown, with well-defined darker cross bands, which, on the 

 foot, tarsus, inner side of tibia and front side of thigh, alternate 

 with a whitish ground-colour ; hinder side of thighs, and sometimes 

 also the flanks, bright crimson. Lower parts greyish, speckled with 

 whitish ; lower jaw white-edged. 



Many young specimens ; the largest measures 39 millim. from 

 snout to vent. 



