44 

 22. Hyla bicolor (Gray). 



Eucnemis bicolor Gray, Zool. miscell., London, 1831, p. 5. 



Hylomantb fallax Peters, Monatsber. Akad. Berlin, 1880, p. 224, fig. 4. 



Hylella bicolor Boulenger, Cat. Batr. Sal. Brit. Mus., 1882, p. 421. 



Hyla bicolor v. Kampen, Nova Guinea, V, pt. 1, 1906, p. 173, pi. VI, fig 7 (tadpole). 



Tongue suboval, slightly nicked; vomerine teeth in two 

 small groups between the choanae, or absent. Head as long 

 as broad; snout projecting, as long as the upper eyelid, much 

 longer than deep; canthus rostralis strong; loreal region nearly 

 vertical, concave ; nostril nearer the tip of the snout than the 

 eye; interorbital space broader than the upper eyelid; tym- 

 panum distinct, about half the diameter of the eye. Disks of 

 fingers and toes smaller than tympanum ; first finger shorter 

 than second, which is shorter than fourth ; fingers webbed at 

 the base, toes nearly entirely webbed ; subarticular tubercles 

 moderate; inner metatarsal tubercle elliptic, the outer circular, 

 very small or absent; the heel reaches the tip of the snout, 

 or not quite so far; tibia 3 /~ length of head and body. 



Skin smooth, belly and lower surface of thighs granulate; 

 a more or less distinct fold across the chest. 



Bluish above, immaculate or dotted with blackish ; a blackish 

 streak on canthus rostralis and temporal region ; a white streak 

 from below the eye to the shoulder, sometimes continued 

 along the side of the body; beneath whitish, immaculate. 

 Young individuals probably purplish brown, with a white 

 longitudinal streak at each side from the nostril along the 

 upper eyelid to the sacral region. Length 33 mm. 



Male with an external subgular vocal sac, and in the 

 breeding season with a triangular, brown copulatory excres- 

 cence on the first finger. 



Tadpole. — The following tadpoles probably belong to 

 this species: 



Length of body about once and a half its width; tail more 

 than once and a half as long as body, twice as long as deep. 

 Nostril nearer the tip of the snout than the eye; eyes lateral, 

 in the middle between tip of snout and spiraculum, or nearer 

 the former; the distance between them 2 1 /., to 3 times that 

 between the nostrils and twice the width of the mouth ; spira- 

 culum sinistral, not visible from above, nearer the origin of 

 the hind limbs than the tip of the snout ; vent dextral, above 

 the lower border of the subcaudal crest of the tail. Tail 



