Species of the Genus Rana. 23i) 



upper parts very warty; an interrupted 



dorsolateral fold ; belly granular ; male 



unknown 2. R. bufoniformis, Bl^r. 



Vomerine teeth not extending outwards be- 

 yond the vertical of the inner edges of 



the choanoe ; ringers without discs, first 



not or but slightly longer than second ; 



tibio-tarsal articulation reaching the 



eye ; heels meet or fail to meet ; tibia 



2^ to 2f times in length from snout to 



vent : toes § to J webbed ; upper parts 



smooth or warty ; no dorso-lateral fold ; 



belly feebly granular ; male with in- 

 ternal vocal sacs 3. R. opisthodon, Blgr. 



Vomerine teeth extending outwards beyond 



the vertical of the inner edges of the 



choanoe ; fingers with the tips dilated into 



small discs, first longer than second ; 



tibio-tarsal articulation reaching the eye 



or the tip of the snout ; heels meet or feebly 



overlap; tibia li to 2\ times in length 



from snout to vent ; toes f to entirely 



webbed ; skin smooth or feebly warty 



above, smooth beneath ; no dorso-lateral 



fold; male with external vocal sacs. ... 4. R. guppyi, Blgr. 



III. Uylorana. 

 Vomei'ine teeth between the choanae or extending beyond the level of 

 their posterior borders, in oblique groups or short series ; can- 

 * thus rostralis strong; tympanum § to f diameter of eye; tips 



of fingers and toes dilated into well-developed discs ; glandular 

 dorso-lateral fold, if present, confluent with the supratemporal ; 

 nasal bones narrow, oblique, widely separated from each other and 

 from the frontoparietals ; ethmoid largely exposed above, ex- 

 tending to between the nasals ; omosternum not forked at the base. 



A. No dorso-lateral glandular fold ; head as long as broad or broader 



than long; discs of toes not larger than those of the fingers ; 

 outer metatarsal tubercle absent or rather indistinct ; tibio- 

 tarsal articulation reaching between eye and tip of snout, or 

 slightly beyond; heels feebly overlapping; tibia If to a little 

 over 2 times in length from snout to vent; male with an ex- 

 ternal vocal sac on each side of the throat and a large oval 

 gland on inner side of arm 5. R. arfaki, A. B. Mey. 



B. A dorso-lateral glandular fold ; head as long as broad or longer 



than broad ; discs of toes larger than those of the fingers ; outer 

 metatarsal tubercle present, rarely indistinct. 

 a. Male with a large external vocal sac on each side of throat and 

 a large oval gland on inner side of arm. 

 Tibio-tarsal articulation reaching beyond tip 

 of snout ; heels strongly overlapping ; 

 tibia 1| to 1| times in length from snout 



to vent 6. R. t/risea, v. Kamp. 



Tibio-tarsal articulation reaching eye or be- 

 tween eye and nostril ; heels more or 



