1920.] 



G. A. BouLENGER : Froqs of the Genus Rana. 



on the anterior part of the back, where the distance between the 

 two is \ to nearly to the length of head and body ; a strong glan- 

 dular fold from the eye to the shoulder : lower parts smooth. 



Brown above, with blackish canthal and temporal band, the 

 latter involving the tympanum ; a dark cross-band between the eyes; 

 lips with dark vertical iDars ; dorso-lateral fold sometimes whitish, 

 edged with blackish on the outer side ; limbs with dark cross-bands. 

 Whitish beneath, with dark mottling on the sides of the throat. 



Tadpoles, obtained at Kurseong by Dr. Annandale, are very 

 similar to those of R. liehigii. Tail pointed, 2^ to 2^ times as 

 long as the body. Lips large, the upper with a series of papillae 

 on the sides , the lower with two complete series ; beak entirel}^ 

 black ; 7 series of upper labial teeth, only the outer continuous ; 

 3 series of lower labial teeth, all continuous or the inner or the 2 

 inner very narrowly interrupted. Total length up to 58 milli- 

 metres. 



Measurements in milltmetres. 



From snout to vent 



Length of head 



Width of head 



Snout 



Eye 



Interorbital width 



Tympanum 



Fore limb . . 



First finger 



Second finger 



Third finger 



Fourth finger 



Hind limb. . 



Tibia 



Foot 



Third toe . . 



Fourth toe 



Fifth toe . . 



I — 2. Pashok. 



Kurseong. 



Habitat. Khasi hills and Eastern Himalayas. 



[This frog is very common amongst dense herbage in low 

 bushes at the edge of shady jungle streams in the Eastern Hima- 

 la3'as at altitudes between 4 and 6000 ft. N. A.] 



This species was established on a single female specimen, then 

 in the Indian Museum, procured by the late Dr. Jerdon in the Khasi 

 hills. I took notes on the specimen before its return to the 

 Indian Museum, from which, I am informed by Dr. Annandale, it 

 has now disappeared. I have also examined two female specimens 

 from Pashok, Darjiling district, 3500 ft., and a third from Kur- 

 seong in the same district, preserved in the Indian Museum ; the 

 above measurements are taken from these specimens. 



Dr. Annandale united R. assamensis with R. vicina, but the 

 former differs from the latter in three important characters : — The 

 position of the vomerine teeth, which do not extend at all be- 

 yond the level of the posterior borders of the choanae ; the distinct 



