1920. J G. A. BouLENGER : Frogs of the Genus Rana. 79 



than the interorbital width, which equals or nearly equals that 

 of the upper eyelid; tympanum small, hidden or very indis- 

 tinct. 



Fingers obtuse, first as long as or slightly shorter than the 

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

 ately large, moderately prominent. 



Hind limb long, the tibio-tarsal articulation reaching the tip 

 of the snout or a little beyond, the heels strongly overlapping 

 when the limbs are folded at right angles to the body; tibia 3 to 4 

 times as long as broad, if to 2 times in length from snout to vent, 

 longer than the foot, nearly as long as or shorter than the fore 

 limb. Toes with the tips swollen into small discs, entirely 

 webbed, the web almost rectilinear or more or less notched ; sub- 

 articular tubercles moderately large, moderately prominent; no 

 tarsal fold * inner metatarsal tubercle oval or elliptical, feebh' prom- 

 inent, I to \ the length of the inner toe ; no outer tubercle 



Smooth above, or with granules and small warts ; a more or 

 less distinct fold across the head behind the eyes and a strong 

 glandular fold from the eye to the shoulder ; a moderateh^ broad 

 but usually very prominent dorso-lateral glandular fold, excep- 

 tionally very indistinct or broken up into a chain of warts, 

 slight!}^ converging towards its fellow on the anterior part of the 

 back, where the distance between the two is 5-| to 7 times in the 

 length of head and body ; lower parts smooth. 



Olive or brown above, uniform or with small darker spots, 

 sides with large dark marblings, the dorso-lateral folds often edged 

 with blackish ; a blackish streak on the canthus rostralis and a 

 blackish temporal spot ; limbs usually with irregular dark cross- 

 bars. Lower parts brownish, or whitish marbled with brown. 



Males with internal vocal sacs ; during the breeding season 

 the arms are remarkably thickened and groups of black horny 

 spines are present on each side of the breast, on the inner side of 

 the arm and on the upper side of the three inner fingers. After 

 the nuptial period, the male has but moderately strong forelimbs, 

 without spines, but may be distinguished from the female by the 

 large and very prominent inner carpal tubercle ; the dorsal warts 

 and granules may bear minute horny spinules (male from Ghoom 

 near Darjeeling, from Mrs. Kemp's collection in the Indian 

 Museum). 



Skeleton very similar to that of R. temporaria. Nasals rather 

 small and separated on the median line ; ethmoid uncovered in 

 front ; zygomatic process of squamosal moderately long. Omo- 

 sternal style entire. Terminal phalanges with short transverse 

 expansion at the end. 



The tadpole is known from Darjeeling specimens. Tail point- 

 ed, 2| to 3 times as long as head and body. Lips large, the upper 

 with a series of papillae on the sides only, the lower with two com- 

 plete series ; beak entirely black ; 7 or 8 series of upper labial teeth, 

 the 2 or 3 outer continuous; 3 series of lower labial teeth, the 

 2 outer continuous, the inner narrowh^ interrupted. 



