V 



115 



THIRSTY FROG. 



Rana Sitibunda. R. supra ex glauco cinerascens, maculis ex viri- 

 dante nigricantibus varia, suhtus sordide alba, plantis seniipaU 

 matis subheptadactylis. Lin. Syst. Nat. p. 1051. Pall. it. 1. 

 p. 458. 



Glaucous grey Frog, variegated with blackish green spots ; be- 

 neath whitish, with the hind feet semipalmated and subhep- 

 tadactyle. 



Native of desert places about the river Ural : 

 conceals itself during the day : has the habit of a 

 toad, but is larger : body warted ; head short : 

 two calli or spurious toes on the hind feet. 



LEVERIAN FROG. ' 



Rana Leveriana. R. fusco-ccerulea, subtus albida, supra linea 

 utrinque alba alteraqiie abrupta, pedibus posterioribus palmatis. 



Dusky-blue Frog, whitish beneath, with palmated hind feet, 

 and body marked above by two long and two short white 

 stripes. 



Habit of common Frog, but the body plumper 

 and limbs shorter in proportion : colour above 

 much resembling that of the R. bicolor, but ra- 

 ther deeper or more obscure : from behind each 

 eye runs a white line or narrow^ stripe as far as the 

 thighs ; another shorter stripe runs from the nos- 

 trils over the edges of the upper lip as far as the 

 fore legs : on the back of the head is a smallish 

 trifurcated spot, the two upper divisions pointing 

 forwards : under surface yelloM'ish white, and 



