1920. J G. A. BouLENGER : Frogs of the Genus Rana. 8g 



Head not or but slightly broader than long ; snout usually 

 pointed, but sometimes rounded ; interorbital space I to I the width 

 of the upper eyelid ; tympanum 5 to ? the diameter of the eye. 



First finger constantly longer than the second. 



Tibio-tarsal articulation reaching the tympanum, the eye, or 

 the nostril; heels meeting, or failing to meet; tibia 2^ to 3 J times 

 as long as broad, usually much shorter than the foot; toes |- to 

 nearly entirely webbed, i or 2 phalanges of fourth free ; inner 

 metatarsal tubercle large, compressed, semicircular or semielliptic, 

 its base more or less oblique to the axis of the foot, i to if times 

 in the length of the inner toe, and 5 to 8 times in that of the tibia ; 

 this tubercle often connected with the inner toe by a membrane 

 which penetrates into the distal third of its base. 



Back with more or less distinct elongate glandular or inter- 

 rupted glandular folds ; dorso-lateral glandular fold prominent, |- to 

 f the width of the upper eyelid, extending to the hip, or if broken 

 up posteriorly not deviating from its course. 



Coloration very variable. Green, olive, or brown above, with 

 or without black spots which may form longitudinal bands or 

 cross-bars on the back ; a pale green or yellow vertebral streak or 

 band usually present, the dorso-lateral folds also of a pale colour 

 and standing out very conspicuously ; some specimens black above, 

 with three yellow streaks; hind limbs usually with well-marked 

 dark cross-bands ; exceptionally a fine light line along the inner 

 side of the upper surface of the tibia ; groin and hinder side of 

 thighs yellow, marbled with black. Lower parts white, always 

 unspotted. Vocal sacs grey to blackish. 



Hahitat. Amoor Province of Siberia, Saghalien Island, Japan, 



Corea, Mongolia, China. 



The locahties Loo Choo Islands and Bangkok, Siam, appended 

 to specimens presented by Mr. G. E. Mason to the British Museum, 

 are probably erroneous. 



Measurements in millimetres. 



