1920.] G. A. BouLENGER : Frogs of the Genus Rana. 187 



upper from the lower surface; first linger longer than the second, 

 third longer than the snout; subarticular tubercles large and very 

 prominent. 



Hind limb moderately long, the tibio-tarsal articulation reach- 

 ing the eye or between the eye and the nostril, the heels over- 

 lapping when the limbs are folded at right angles to the body ; 

 tibia 4 times as long as broad, 2 or a little more than 2 times in 

 length from snout to vent, much shorter than the fore limb, as 

 long as or slightly longer than the foot. Toes ending in well-devel- 

 oped discs, similar to but a little larger than those of the fingers, 

 the web reaching the discs of the third and fifth, two phalanges of 

 fourth free ; outer metatarsals separated nearly to the base ; sub- 

 articular tubercles moderately large, prominent; no tarsal fold ; 

 inner metatarsal tubercle oval or elliptic, i to ° the length of the 

 inner toe ; a round outer tubercle. 



Skin of upper parts smooth ; a moderately broad or rather 

 broad glandular dorso-lateral fold from above the tympanum to 

 the hip, the distance between these folds, on the back, 5 to 5I 

 times in the length of head and body ; a glandular fold from below 

 the eye to the shoulder, followed by a small glandule. Lower 

 parts smooth. 



Uniform olive or chestnut-brown on the upper surface of the 

 head and body, dark brown to blackish on the sides, the latter shade 

 sharply defined above and below ; a white streak extending along 

 the upper lip ; no spots ; limbs with dark cro.ss-bands ; hinder 

 side of thighs yellow, marbled with dark brown or black. White 

 beneath, uniform or spotted or marbled with blackish brown. 



Males with an external vocal sac on each side of the throat ; 

 a large flat gland on the anterior side of the arm ; a moderately 

 strong pad on the inner side of the first finger. 



Osteological characters as in R. paftia. 



Measurejnenls, in niillimelres. 



From snout to veut 



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 . . . . -4 28 32 25 20 20 20 



Fifth toe .. ..16 iS 22 17 14- 14 14 



I. Solomon Ids. (type). 2. San Christoval (type). 3. Santa Anna. 4. Isabel. 

 5-7. Guadalcanar. 



