58 



distal one of third and fourth finger bilobate or double ; an 

 elliptic inner, no outer metatarsal tubercle ; a tarsal fold ; the 

 heel reaches the tip of the snout or beyond ; tibia more than 

 half the length of head and body. 



Skin granulate above ; a fold above the tympanum ; belly 

 and lower surface of thighs coarsely granulate; sides some- 

 times areolated; a feeble dermal ridge along the outer side 

 of fore-arm, tarsus and fifth toe. 



Blue above (in spirit) ; upper arm, thigh (except a narrow 

 band along the upper surface), inner fingers and toes, the webs 

 and the tympanum colourless; upper lip and upper eyelid nar- 

 rowly edged with white; a series of small white spots along 

 the inner border of the upper surface of the tibia may be 

 present; white beneath. In life the white parts may be spotted 

 with red. Length 62 mm. 



Male with an external vocal sac. 



Closely allied with H. infrafrenata, from which it is disting- 

 uished by the absence of a white streak along the lower lip 

 and by the shape of the snout. 



Habitat: New Guinea (Mamberamo riv. ! ; Idenburg riv. !; 

 Humboldt bay!; Lorentz riv.!; Van der Sande riv.!). 



37. Hyla caerulea (White). 



Rana caerulea White, Journal of a Voyage to New South Wales, London, 1790, 



p. 248, with plate '). 

 I'elodryas caeruletis Giinther, Cat. Batr. Sal. Brit. Mus., 1858, p. 119, pi. IX, fig. B. 

 Hyla caerulea Boulenger, Cat. Batr. Sal. Brit. Mus., 1882, p. 383. 

 Hyla caerulea v. Kampen, Nova Guinea, IX, pt. i, 1909, p. 34. 

 Hyla caerulea Boulenger, Zool. Jahrb., Suppl. XV, i, 1912, p. 211. 



Tongue circular, slightly notched behind ; vomerine teeth in 

 two slightly oblique series on a level with the posterior bor- 

 ders of the choanae. Head a little broader than long; snout 

 rounded, about as long as or a little longer than the orbit 

 and longer than deep; canthus rostralis obtuse, but distinct; 

 loreal region oblique, slightly concave; nostril nearer tip of 

 snout than eye; interorbital space as broad as or broader 

 than the upper eyelid; tympanum very distinct, about "/g the 

 diameter of the eye. Disks of second to fourth finger very 



l) The description of White is very insufficient and the figures are very 

 bad; it is doubtful, if they really represent a Hyla^ as is supposed by all the 

 subsequent authors. 



