BATEACHIA SALEENTIA. 75 



Description. — In habit similar to young specimens of Polypedates 

 maculatus, but easily to be distinguished by the hidden tympanum, 

 whilst on the other hand the vomerine teeth are rather difficult to be 

 seen in young specimens of P. maculatus. Head broad, -^dth flat 

 crown, angular canthus rostralis, and with rather short muzzle ; 

 nostril round, on the canthus ; eye large ; tympanum covered by the 

 skin, conspicuous in rather dried specimens, oval, one-foiu'th the 

 width of eye. Disks rather large ; subarticular tubercles moderate ; 

 fingers very slightly webbed ; toes two-thirds webbed, third and 

 fifth nearly equal in length, fourth not much longer. Skin quite 

 smooth, only belly and hinder side of thigh granular ; a cutaneous 

 fold from the eye above the tympanum to the arm-pit. Transverse 

 process of sacral vertebra with a slightly dilated cartilage at the outer 

 end ; tongue heart-shaped, deeply notched behind ; interior nostrils 

 round ; eustachian tubes triangular, nearly equalling them in size. 

 Length of body 1-i" ; length of front extremity 1" ; length of hinder 

 extremity 2-i-". 



The skull is entirely ossified ; the sutura coronalis qviite obsolete ; 

 also the suprascapula exhibits no cartilaginous portions. Atlas 

 without diapophyses, but they are present and nearly of the same 

 strength in all the other vertebrae ; those of the sacral vertebra are 

 cylindrical and the strongest. 



3. Ixalus leucorhinus. 



Martens, in Nomend. Rcpt. Mus. Zool. Berol. 1856, p. 36. 



Toes not qiute half- webbed. Yellowish brown with dai-ker bands ; 

 a large six-sided white spot on the forehead ; a streak from the 

 muzzle to the hip. Ceylon. 



4. Ixalus pcecilopleurus. 



Martens, I. c. 



Toes not quite half- webbed. Above greyish, darker marbled ; 

 beneath whitish, sides and extremities with oblique black cross- 

 bands. Ceylon. 



5, Ixalus natator. (Plate IV. fig. C.) 



Disks of fingers rather large ; toes entirely webbed ; upper parts 

 with very fine granulations. Ashy brown, either uniform or with 

 rounded bluish- white spots. 



Var. A. Back uniform brown, 

 rt. Adult male. PhiHppincs, 



Var. B. Greyish brown ^\'ith rounded bluish-white spots. 



h, c. Adult male and female. Philippines, 



Description. — Habit slender ; head elongate, with narrow flat 

 crown, broad forehead, angular canthus rostralis, and prominent 



