478 JOHN HJIWITT. 



The type is in the Museum of the Monastery at Mai-iann- 

 hill. 



The chai'acters which separate this species from H. regis 

 will also serve to distinguish it from H. pur colli 8clater} 

 I may here mention that the specific validity of regis is not 

 absohitely certain; H. purcelli, on which the genus was 

 founded by Mr. W. L. Sclater, is expressly stated both in the 

 generic and specific descriptions to have the toes completely 

 webbedj yet in the figure accompanying the descriptioi"! the 

 toes are not thus represented, being apparently about three- 

 fourths webbed; in regis they are scarcely more than half 

 webbed. 



Tadpole. — The most striking feature of the tadpole is the 

 presence of a large circular oral disc ventrally situated ; 

 this is strongly suctorial in function. In a specimen in 

 which the hind-limbs are just commencing to push through 

 the skin this disc is 10 mm. in diameter. 



The mouth itself is widely open and subquadrangular in 

 shape. The upper half of the beak is absent ; the lower half 

 is black but not strongly developed. The labial teeth are 

 disposed in a single row in each series ; there are four upper 

 continuous series, the two outer of which are weakly developed; 

 the first lower series next to the beak is narrowly interrupted 

 in the middle, but all the others are continuous, four strongly 

 developed rows being followed by ten more weakly developed 

 series. The lips are entirely bordered with small fleshy 

 papilla3. 



The nostril is nearer to the eye than to the end of the snout, 

 which is large, broad and rounded. The spiracle is sinistral, 

 directed backwards and slightly upwards, its opening being 

 nearer to the vent than to the tip of the snout. The vent 

 seems to be median ; this cannot be positively aifirmed owing 

 to the appearance of hind-limbs in the specimen. 



The tail is fairly long and obtusely pointed ; its crests are 



' Sclater, W. L., 'Annals of tlie South African Museum,' vol. i, 

 p. 111. 



