1920.] G. A. BouLENGER : Frogs of the Genus Rana. 75 



Hind limb moderately long, the tibio-tarsal articulation reach- 

 ing the eye, the heels overlapping when the limbs are folded at 

 right angles to the body ; tibia 2f to 3-^ times as long as broad, 

 twice in length from snout to vent, or a little more or a little less, 

 as long as or a little shorter than the foot, shorter than the fore 

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

 webbed ; subarticular tubercles moderately large, moderately 

 prominent ; a feeble tarsal fold ; inner metatarsal tubercle narrow, 

 feebly prominent, f the length of the inner toe; no outer tubercle. 



Upper parts granulate or shagreened, with numerous warts, 

 which may be small and subconical or large and elongate on the 

 back ; these 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 or blackish brown above ; lips with darker vertical 

 bars ; limbs with more or less distinct black cross-bars ; hinder 

 side of thighs black, with more or less distinct lighter marblings. 

 Lower parts whitish, throat and lower surface of limbs spotted or 

 marbled with blackish.' 



Males with internal vocal sacs; during the breeding-season the 

 arms are remarkably thickened, and black horny spines are pre- 

 sent, more or less scattered, on the whole breast and, closer 

 together, on the inner metacarpal tubercle and on the upper side 

 of the two or three inner fingers. 



The skull is very similar to that of the preceding species, but 

 the zygomatic branch of the squamosal is longer. Omosternal style 

 entire. 



Measurements in millimetres. 



i — 2. Ichang, types. 3—4. Kuatun. 5—6. Pingho. 7. Ningpo. 8. Man Soa 

 Mts,, Tonkin. 



i The coloration is thus described by David : Dessus brun olive, marque de 

 taches noiratres rondes ou allongees et de pustules ; cuisses et jambes avec sept 

 raies noires ; interieur des cuisses noir marbre de bJanc. Dessous blanchatre ; 

 liaut de la gorge marbre de brun. Iris brun dore. 



