1920.] G. A. BouLKNGER : Frogs of the Genus Rana. 157 



Fourth finger 



Hind limb 



Tibia 



Foot 



Third toe 



Fourth toe 



Fifth toe .. 10 16 13 IS 18 15 13 10 9 i3 I4 12 14 13 



I. Hong Kong. 2-3. Hong Kong (types). 4. China (type). 5-7- Man Son 

 Mts., Tonkin. 8. Bangkok. 9-10. Sapatoom, Siam. 11. Pera-kan, Camboja. 

 12-14. Kedah, Malay Peninsula. 



Habitat. Southern China, Tonkhi, Burma, Siam, Malay- 

 Peninsula. 



79. Rana aurantiaca. 



Rana aitrantiaca, Bouleng. Jourii. Bomb. N.H. Soc. XV, 1904, p. 430, 

 pi.—, fig. I. 



Vomerine teeth in short oblique series between the choanae, 

 nearer the latter than to each other. 



Head much depressed, longer than broad ; snout obtusely 

 pointed, a little longer than the eye, scarcely projecting beyond the 

 mouth; canthus rostralis distinct; loreal region nearly vertical, 

 concave ; nostril much nearer the tip of the snout than the eye ; 

 distance between the nostrils equal to the interorbital width, which 

 is a little greater than that of the upper eyelid ; tympanum very 

 distinct, | the diameter of the eye and 3 times its distance from 

 the latter. 



Fingers long and rather slender, the tips dilated into very 

 small discs which are longer than broad and have the upper sur- 

 face separated from the lower by a groove ; first finger a little 

 longer than the second, third a little longer than the snout ; sub- 

 articular tubercles moderate. 



Hind limb rather long and slender, the tibio-tarsal articula- 

 tion reaching between the eye and the tip of the snout, the heels 

 strongl}^ overlapping when the limbs are folded at right angles to 

 the body ; tibia 6 times as long as broad, J the length of head and 

 body, shorter than the fore limb, as long as the foot. Toes with 

 the tips dilated like the fingers , f webbed ; outer metatarsals 

 separated nearly to the base ; subarticular tubercles rather small ; 

 no tarsal fold ; inner metatarsal tubercle oval, feebly prominent, 

 |- the length of the inner toe ; a small, round outer tubercle. 



Skin smooth; a narrow glandular dorsolateral fold, from 

 above the tympanum to the hip, its distance from its fellow, on 

 the back, 6 times in the length from snout to vent. 



Orange above, without spots on the back or bars on the limbs ; 

 a black band along each side of the head and body; upper lip, 

 canthus rostralis, and dorso-lateral fold white ; terminal discs of 

 toes black ; lower parts white. 



Nasal bones small, oblique, widely separated from each other 

 and from the ethmoid, the upper part of which is uncovered and 

 very obtusely pointed in front. 



Male unknown. 



