568 M. G. A. BOULENGER ON THE [NoV. 16, 



two thirds or four fifths of that between one of them and the 

 lip. The eyes are nearer to the angles of the jaws than they are to 

 the tip of the snout. The interorbital space is flat and very broad, 

 especially in females ; in these its least breadth is much more than 

 the upper eyelid's greatest breadth ; it nearly equals it in males. 

 The tympanum is more distinct than in any other species of Bufo, 

 rounded and quite close to the eye ; its diameter equals the greatest 

 orbital diameter, or nearly so. The cleft of the mouth does not quite 

 extend to the level of the centre of the tympanum. The tongue is 

 elliptical and about twice as long as broad. In preserved speci- 

 mens the parotoids are quite invisible ; but, as Dr. Giinther has 

 observed, the skin of the regions where they ought to be found is 

 much thicker; it is therefore most probable that during life flat 

 parotoids are conspicuous. 



The body is thrice as long as the head in females, shorter in males 

 and young. 



The fore limb is always shorter than the body ; it is rather thicker 

 in males than in females. The fingers are moderately elongate, with 

 blunt tips and simple subarticular tubercles, which, however, have a 

 tendency to bipartition ; the first is a little longer than the second, 

 which is a little shorter than the fourth. A large flat oval tubercle 

 occupies the middle of the hand, another smaller one the base of the 

 thumb. 



The hind limb is moderately elongate ; being carried forwards along 

 the bodjr, the metatarsal tubercles reach the eye in males, the tym- 

 panum in females and young. The tibia is much longer than the 

 head, and deprived of a parotoid-like gland. A very distinct cuta- 

 neous fold extends along the two thirds of the inner edge of the 

 tarsus. The metatarsal tubercles are oval, the inner one more promi- 

 nent. The toes are moderately elongate ; the web extends to near 

 their tips, but is deeply emarginate ; the subarticular tubercles are 

 simple. 



The body is covered above with irregular, flat, distinctly porous 

 warts which do not exhibit any trace of spines ; larger warts form a 

 sort of chain along the sides. The lower surfaces are granular; the 

 granules are scarcely larger beneath the thighs ; they are larger on 

 the male's throat. 



The upper parts are olive, with a few dark black- circled spots; a 

 blackish vitta, beginning behind the eye, extends on the sides of the 

 bod}'. The hind limbs are transversely barred with blackish. The 

 lower surfaces are more or less vermiculated with blackish ; the thighs 

 are often blackish beneath. The young very often exhibit a light 

 rhomboidal spot on the scapular region. 



The males are furnished with a little-developed subgular vocal sac, 

 the opening of which is double. The throat is blackish. Blackish 

 rugosities occupy the inner surface of the first three fingers during 

 the breeding-season. 



Geographical Distribution. — This species has only been found in 

 South Africa. It is rare in collections. 



