36 



Hyla fallax Boulenger, Proc. Zool. Soc. London, 1S98, p. 482, pi. XXXIX, fig. 4. 

 Hyla boulengeri v. Kampen, Nova Guinea, V, pt. i, 1906, p. 175. 

 Hyla boulengeri v. Kampen, Zool. Jahib., Syst., XXXVII, 1914, p. 367. 

 Hyla fallax Boulenger, Transact. Zool. Soc. London, XX, pt. 5, 1914, p. 248. 



Tongue subcircular, entire or slightly nicked and little free 

 behind; vomerine teeth in two .small, nearly circular groups 

 on a level with the posterior borders of the choanae, absent 

 in the young. Head broader than long; snout rounded, vertically 

 truncate, as long as the eye, longer than deep ; canthus 

 rostralis rounded; loreal region very oblique, concave; nostril 



nearer tip of snout than eye ; 

 interorbital space broader than 

 the upper eyelid ; tympanum 

 distinct, "3 to '/.^ the diameter 

 of the eye. Disks of second to 

 fourth finger about as large as the 

 tympanum, of first finger and of 

 toes a little smaller; first finger 

 shorter than second, which is 

 shorter than fourth; outer fingers 

 almost half webbed, the web 

 reaching the penultimate subarti- 

 cular tubercles; third and fifth toe 

 equal in length ; toes nearly enti- 

 rely webbed, the web reaching the disks of third and fifth 

 one ; subarticular tubercles and inner metatarsal tubercle feeble, 

 no outer metatarsal tubercle; the heel reaches between the 

 eye and the tip of the snout or to the tip of the snout; tibia 

 half length of head and body, or a little more. 



Skin smooth above and on the throat, granular on the belly. 

 Yellowish-brown above, whitish beneath, lower surface of 

 thighs lemon yellow. Young specimens are purplish-brown 

 above, with large white spots on the head and an often more 

 or less discontinuous, white band on each side of the back; 

 lower surfaces white or yellowish brown ; limbs brownish, with 

 white dots or transverse bars. Length -3^6 mm. 

 Male with a subgular vocal sac. 

 Perhaps identical with H. rueppelli. 



Habitat: New Guinea (Jamur lake ! ; Mamberamo riv. ! ; Van 

 Rees mts. !; Humboldt bay ! ; Timena riv. ! ; Friedrich Wilhelms- 

 hafen ; Katow; Digul riv.!; Lorentz riv.!; Setekwa riv.) ; Jobi isl.? 



Fig. 4. Hyla fallax Blgr., 



