1920.] G. A. BouLENGER : Frogs of the Genus Rana. 61 



The position of this species is doubtful, but there seems to be 

 no better place for it than not far from R. doriae and R. microdisca. 



24. Rana corrugata. 



Rana kiihlii, part., Giinth., Cat. Batr. Sal. p. 7 (1858), and Rept. Brit. 



Ind. p. 404, pi. xxvi, fig B (1864). 

 Rana corrugata, Peters, Mon. Berl. Ac, 1863, p. 412; Bouleng,, Cat. 



Batr. Ecaud. p. IQ (1882). Ann. and Mag. N.H. (5) XIV, 1884, 



p. 587, and Faun. Ind., Rept. p. 443 (1890); Annand., Mem. As. Soc. 



Beng. VI, 1917, p. 149, fig- 



Vomerine teeth in small oblique groups close together behind 

 the level of the choanae. Lower jaw with two acutely pointed 

 tooth-like prominences in front, strongly developed and fitting into 

 pits in the upper jaw in adult males. 



Form stout, toad-like. Head broader than long, much de- 

 pressed ; snout rounded, not projecting, as long as or a little shorter 

 than the eye ; no canthus rostralis ; loreal region oblique, not con- 

 cave ; nostril a little nearer the eye than the end of the snout ; 

 the distance between the nostrils equals the interorbital width, 

 which exceeds the very narrow upper eyelid, the e^^e being obliquely 

 directed upwards; tympanum hidden, distant from the eye and 

 about f its diameter. 



Fingers rather short, obtuse, without dermal margin, first 

 usually a little shorter than the second, third longer than the snout ; 

 subarticular tubercles moderately large, moderately prominent. 



Hind limb short and thick ; tibio-tarsal articulation reaching 

 the temple or the posterior border of the eye; heels separated 

 when the limbs are folded at right angles to the bod}- ; tibia 2 to 

 2-| times as long as broad, 2\ to 2^ times in length from snout to 

 vent, as long as the foot, much shorter than the fore limb. Toes 

 short, fully and broadly webbed, terminating in rather large round 

 discs; subarticular tubercles rather small, moderately prominent; 

 a narrow fold along the inner side of the first toe and of the tarsus, 

 interrupted by the feebly prominent, narrow inner metatarsal 

 tubercle, which measures about ^ the length of the inner toe ; no 

 outer tubercle. 



Upper parts with very crowded linear rugosities, which form 

 transverse folds on the bod}'' ; round warts on the upper eyelids ; a 

 feeble fold from the eye to the shoulder ; lower parts smooth. 



Brown above, uniform or with darker spots ; a yellow, dark- 

 edged cross-bar between the eyes, and another below the dark 

 temporal fold ; a yellow vertebral streak sometimes present ; 

 lower parts white, throat sometimes spotted with brown. 



Males without secondary sexual characters except the greater 

 development of the tooth-like processes of the lower jaw. 



Skeleton as in R. kuhlii. 



The tadpole has been described and figured by Annandale. 

 Tail only about i| times as long as head and body. Beak extremely 

 massive and prominent, entirely black ; a large papillose lobe 

 on each side of the mouth ; only a single, long, marginal series 



