4. HYLA. 



411 



Habit raniform. Tongue suboval, nicked and free behind. Vo- 

 merine teeth between the choanas, in two slightly oblique series 

 convergent posteriori}'. Head as long as broad, or a little longer 

 than broad, resembling in shape that of Rana esculenta ; snout 

 longer than the diameter of the eye ; canthus rostralis moderately 

 distinct ; loreal region slightly concave ; interorbital space narrower 

 than the upper eyelid ; tympanum very distinct, half or two thirds 

 the diameter of the eye. Fingers free ; no distinct rudiment of 

 poUex : toes entirely webbed, or nearly so ; disks small, about half 

 the diameter of the tymj)anum ; subarticular tubercles moderate ; a 

 distinct fold along the inner edffe of the tarsus. The hind limb 

 being carried forwards along the body, the tibio-tarsal articulation 

 reaches the eye, sometimes not quite so far, sometimes a little be- 

 yond. Skin smooth or warty above, granulate beneath ; a more or 

 less indistinct glandular lateral fold. Bluish or olive above, spotted 

 or marbled with blue or brown ; a dark streak on the canthus ros- 

 tralis ; generally a whitish band on each side of the back; some- 

 times a light vertebral band ; beneath whitish, immaculate. 'Male 

 W'ith two internal vocal sacs : daring the breeding-season the inner 

 side of the first finger furnished with brown rugosities. From snout 

 to vent 79 millim. 



Australia. 



Dr. Fleming [P.]. 



G. Krefft, Esq. [P.]. 



A. E. Craven, Esq. [P.]. 



Haslar Hospital. 



G. Kreflft, Esq. [P.]. 



Sir A. Smith [P.], 



C. Darwin, Esq. [P.], 

 Mr. W. Buchanan. ■ 

 G. Krefft, Esq. [P.]. 

 R. Gunn, Esq. [P.]. 

 Capt. Ross's Exped. 

 C. Bowring, Esq. [P.]. 



Yak. cyclorliynclius. 

 Litoria aurea, var., Gilnth. Proc. Zool. Soc. 1870, p. 402, pi. .30. f. 3. 



Snout shorter, more rounded. Groin and sides of thighs black, 

 with white spots ; lower surfaces densely reticulated with black, 

 these being, however, immaculate in the young specimen. Perhaps 

 a species. 



(T-x- d , 2 ,. & yg. W. Australia. G. Krefft, Esq. [P.]. 



