403 



DESCRIPTION OF A NEW TREE-FROG FROM NEW 

 SOUTH WALES. 



By G. a. Boulenger. 

 (Communicated by J. J. Fletcher.) 



Hyla chloris. 



Tongue subcircular, slightly nicked and free behind. Vomerine 

 teeth in two small groups between the choanse. Head broader 

 than long ; snout rounded, shorter than the diameter of the orbit ; 

 can thus rostralis obtuse ; loreal region very oblique, slightly 

 concave ; nostril nearer the tip of the snout than to the eye ; 

 inter-orbital space broader than the upper eyelid; tympanum very 

 distinct, three-fifths the diameter of the eye. Three outer fingers 

 extensively webbed, the membrane reaching the disks of the second 

 and fourth ; no distinct rudiment of pollex ; toes nearly entirely 

 webbed ; disks of fingers as large as the tympanum ; subarticular 

 tubercles moderate. Tibio-tarsal articulation reaching the tip of 

 the snout. Upper parts finely granulate ; belly and lower surface 

 of thighs coarsely granulate ; a strong fold across the chest. 

 Green above ; upper arm and throat yellow ; sides of thighs 

 purple ; beneath uniform white. Male with an external gular 

 vocal sac. From snout to vent 63 millim. 



A single specimen, from Dunoon, Richmond River, collected by 

 Mr. R. Helms, was submitted to me by Mr. J. J. Fletcher. It is 

 closely allied to H. gracilenta, Peters, but differs in the larger 

 size, the larger eye, the obtuse canthus rostralis and oblique loreal 

 region, the very distinct tympanum, the skin of which is free from 

 granulations, and the absence of a white streak along the limbs 

 and round the upper surface of the head. This frog was referred 

 to H. gracilenta by Mr. Fletcher (P.L.S.N.S.W. (2), vi. 1891, 

 p. 263). 



