1920.] G. A. Bout,ENGER : Frogs of the Genus Rana. 191 



Head a little longer than Inroad, much depressed ; snout 

 obtusely pointed, projecting beyond the mouth, as long as tl\^ eye 

 or longer; canthus rostralis strong; loreal region feebly oblique 

 or nearly vertical, deeply concave ; nostril a little nearer the tip of 

 the snout than the eye ; distance between the nostrils equal to or 

 greater than the interorbital width, which is equal to or a little 

 less than that of the upper eyelid ; tympanum very distinct, % 

 to ;i the diameter of the eye and 3 to 4 times its distance from 

 the latter. 



Fingers long and slender, sometimes with a narrow dermal 

 border, terminating in small but very distinct discs, which are a 

 little longer than broad and bear a horseshoe-shaped groove 

 separating the upper from the lower surface ; first finger longer 

 than the second, third longer than the snout ; subarticular tubercles 

 large and very prominent. 



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

 ing the eye or between the eye and the nostril ; the heels feebly 

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

 tibia 3-|- to 4 times as long as broad, 2 to 2| times in length from 

 snout to vent, much shorter than the fore limb, as long as or 

 shghtly longer or shorter than the foot. Toes ending in well- 

 developed 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; subarticular tubercles moderately large, prominent; no 

 tarsal fold ; inner metatarsal tubercle oval or elliptic, I the length 

 of the inner ; a round outer tubercle. 



Skin of upper parts smooth or with a few scattered small 

 warts ; a moderately broad glandular dorso -lateral fold, from above 

 the tympanum to the hip, the distance between these folds, on the 

 back, 5 to 5|- times in length of head and body ; a glandular fold 

 from below the eye to the shoulder, sometimes followed b}^ one or 

 two glandules. lyOvver parts smooth. 



Greyish or reddish brown above, uniform or with small dark 

 spots ; flanks usually spotted or marbled with dark brown ; loreal 

 and temporal regions dark brown, tympanum reddish brown; a 

 more or less distinct light streak along the upper lip, continued on 

 the glandular fold behind the mouth ; limbs with dark cross-bands ; 

 hinder side of thighs mottled or marbled with dark brown. White 

 beneath, throat and breast sometimes marbled with brown. 



Males with internal vocal sacs. 



The eggs measure i^ millim.in a female 76 millim. long. 



Measurements , in millimetres. 



From snout to vent 



Head 



Width of head . . 



vSnout 



Eye 



