236 ANURA CHAP. 



possessed by Platypelis, Cophyla and others. The sacral dia- 

 pophyses are dilated. The pupil is either horizontal or vertical. 

 Those which are provided with discs to the fingers and toes 

 are climbers, and mostly slender and long-legged, sometimes of 

 very small size, for instance Cophyla, the body of which is scarcely 

 one inch in length. 



The genera can be determined by means of the following 

 key:— ^ 



.-1. Pupil vertical. Palatine teeth in long transverse series. 



a. Precoracoids ossified. Tips of fingers and toes not dilated. 



Sternum very large. Madagascar . Dyscojjhns. 



Sternum small. Burmah . . . Calluella. 



b. Precoracoids not ossified. Tips dilated . . Plethodontohijla. 

 B. Pupil horizontal. 



ii. Palatine teeth in long transverse series, 

 a. Precoracoids ossified. Tips dilated. 



Fingers and toes free. Precoracoids en- 

 tirely ossified .... Mantipus. 



Fingers and toes webbed at the base. 



Precoracoids semi-ossified . . Platyhiila. 



13. Precoracoids not ossified. Tips not dilated . Phrynocara. 

 h. Palatine teeth in one or two small groups. 

 Precoracoids ossified. Tips dilated. 



Two small groujjs of palatine teeth . Platypelis. 



One single group in the middle of the 



palate ...... Co])hijla. 



Xo teeth on the palate . . . Anodontohyla. 



Byscophus antongili. — Madagascar. General appearance stout, 

 with short legs and a wide mouth. Total length about 3 inches. 

 The skin is mostly smooth, and forms a broad glandular fold 

 which extends from the eye to the groin. The upper parts are 

 beautiful magenta red, with a purplish streak beneath the lateral 

 folds ; the under parts are yellowish white, with minute grey 

 specks. Eed or pink colours, and the lateral folds, occur also in 

 most of the other members of this family, for instance in the 

 Indian genus CaUarUa. 



Sub-Fam. 3. Genyophryninae. — With very small teeth on the 

 anterior portion of the loiver jaw. 



Genyophryne thomsoni. — Pupil horizontal. Tongue oblong 

 and entire. With teeth on the palatine bones, and a serrated 

 transverse dermal ridge in front of the oesophagus. Sternum 

 cartilaginous. Precoracoids absent. Sacral diapophyses moderately 



^ Boulenger, Aim. Nat. Hist. (6), iv. 1889, p. 247. 



