1920.] G. A. BouLENGER : Frogs of the Genus Rana. iii 



inner metatarsal tubercle oval, flat, ^ the length of the inner toe ; 

 a rather larger but rather indistinct roundish outer metatarsal 

 tubercle. 



Head, body, and hind limbs rough with small warts, the 

 largest of which, on the bod}-, are round and studded with minute 

 horny spinules ; larger warts form an interrupted dorso-lateral 

 fold ; a strong glandular fold above the tympanum. Lower parts 

 smooth, except the bell}' and the thighs, which are feebly granulate. 



Uniform purplish brown above, yellowish beneath. 



Male unknown. 



Nasal bones large and in contact with each other and with 

 the frontoparietals, which entirely cover the ethmoid above. Ter- 

 minal phalanges with feeble transverse distal expansion. 



Measurements in millimetres. 



From snout to vent 



Head 



Width of head 



Snout 



Eye 



Interorbital width . . 



Tympanum 



Fore limb 



First finger 



Second finger 



Third finger 



Fourth finger 



Hind limb 



Tibia 



Foot 



Third toe 



Fourth toe 



Fifth toe 



I. Treasury Id. (type). 2. Faro Id. 



Habitat. Solomon Islands ; the type is from Treasury Id., a 

 second specimen from Faro Id. 



One of the most toad-like species of the genus, its form con- 

 trasting strikingly with that of the aUied R. guppyi ; the differ- 

 ence is, however, bridged over b}- R. opisthodon. 



54. Rana opisthodon. 



Rana opisthodon, Bouleng., Proc. Zool. Sac. 1884, p. 211, Tr. Zool. Soc. 

 XII, 1886, p. 50, pl.^x, and Ann. and Mg. N.H- (9) I. 1918, p. 239. 



Vomerine teeth in short and strong oblique series behind the 

 choanae, well within their inner borders, the space between the 

 two series equal to or, usually, less than the length of one of them. 

 Tongue with an obtuse papilla in the middle. 



Head large, much depressed, a little broader than long ; snout 

 rounded, scarcely projecting beyond the mouth, as long as or 

 slightly longer than the eye ; canthus rostralis obtuse ; loreal 

 region very oblique, feebly concave ; nostril much nearer the tip 

 of the snout than the eye ; distance between the nostrils equal 



