On new Frogs of the Genus Rana. 413 



L. — 'Descriptions of ne.ro Frogs of the Genus Rana. 

 By G. A. BouLENGEE, F.R.S. 



(Published by perniissiou of the Trustees of the British Museum.) 



Rana jyhrynoides. 



Vomerine teeth \\\ small oblique groups just behind tlie 

 clioanpe. Head much broader than long, much depressed ; 

 snout rounded, scarcely projecting beyond the mouth, as long 

 as the eye ; canthus rostralis indistinct ; loreal region very 

 oblique, slightly concave; interorbital space narrower than 

 the upper eyelid ; tympanum hidden or very indistinct, -^ to f 

 the diameter of the eye. Fingers obtuse, first longer than 

 second ; subarticular tubercles small, moderately pi-omiiient. 

 Hind limb short, the tibio-tarsal articulation reaching the 

 shoulder or the temple, the heels just meeting when the limbs 

 are folded at right angles to tlie body ; tibia 2i to 2^ times 

 in length from snout to vent. Toes short, with obtuse tips, 

 entirely webbed ; subarticular tubercles small, moderately 

 prominent ; a feeble tarsal fold ; iimer metatarsal tubercle 

 narrow, feebly prominent, ^ the length of the inner toe ; no 

 outer tubercle. Upper parts granular, with numerous small 

 warts on the back, some of which may be elongate ; these 

 granules and warts may bear black horny spinules ; a strong 

 fold across the head behind the eyes, and a very strong 

 glandular fold from the eye to the shoulder ; lower parts 

 smooth. Dark olive above, uniform or with rather indistinct 

 darker spots ; lips with or without dark vertical bars ; dark 

 cross-bars on the limbs very irregular, if present ; lower parts 

 whitish, uniform or throat and limbs spotted or marbled with 

 blackish. Male with internal vocal sacs ; during the 

 breeding-season the arms are remarkably thickened and black 

 horny spines form two patches on the breast and more crowded 

 patches on the inner metacarpal tubercle and on the upper 

 side of the two inner fingers. 



From snout to vent 110 mm. 



Yunnan at Tongchuan fu, where the species was found in 

 great numbers by Messrs. J. Graham and Dymond. 



I had first referred these specimens to R. houlengeri, Gthr., 

 which is no doubt identical with the earlier R. spinosa^T)i\v\di. 

 I now find they differ in the shorter hind limbs, the heels not 

 overlapping, in the shorter inner metatarsal tubercle, and in 

 the absence of swellings to the tips of the toes. 



