10 Records of the Indian Museum. [Vol. VIII, 



8. Rana gerbillus, sp. nov. 

 (Plate ii, fig. i.) 



Allied to R. jerboa (Giiiither), from which it differs in its much 

 smaller tympanum and in other particulars. 



Habit slender. I.ength from snout to vent 33 mm. 



Head broad, triangular; snout bluntly pointed, somewhat de- 

 pressed at the tip, a trifle longer than the diameter of the orbit; 

 nostril a little nearer the tip of the snout than the eye, which is 

 large and prominent; interorbital space flat, as wide as the upper 

 eyelid ; canthus rostralis bluntly angular ; loreal region concave ; 

 tympanum not very distinct, small, about ^ as wide as eye. 



Mouth. — A distinct tooth at the tip of the lower jaw; no free 

 papilla on the tongue ; vomerine te?th ill-developed, in two small 

 roundish patches situated close together in the middle of the 

 palate between the choanae. 



Limbs slender. Fingers slender, with well-developed disks; 

 that on the third rather larger than the tympanum ; that on the 

 first small ; a rudiment of a web between the third and fourth 

 fingers ; others quite free ; first finger shorter than second. Hind 

 limbs very long, the tarso-tibial articulation reaching far beyond 

 the edge of the snout. Toes almost c )mpletely webbed ; their 

 disks subequal, sm.aller than the tym])anum ; subarticular tuber- 

 cles large but not prominent, oval ; a low oval inner metatarsal 

 tubercle ; no outer one; no tarsal fold. 



Skin. — A distinct glandular latero-dorsal fold and another, 

 less distinct, extending from the eye above the tympanum almost 

 to the shoulder. Dorsal surface of the head minutely pitted, of 

 the back obscurely granular with large compressed longitudinal 

 tubercles scattered more especially on the sides. Ventral surface 

 and limbs smooth. 



Colouration. — Dorsal surface very dark grey obscurely mottled 

 with a paler shade; lips with pale vertical stripes; sides pale, 

 spotted with dark grey; limbs, especially the thighs, conspicuously 

 barred; ventral surface dull greenish yellow with large round or 

 oval brown spots on the chin, throat and chest. 



Habitat. — Yembung, Abor foot-hills at an altitude of 1,100 ft. 

 A single specimen was found at the edge of a small stream in 

 February. 



Type. — No. 16925 of Indian Museum register of Reptiles and 

 Batrachia. 



Rana jerboa (Giinther), to which this new species is most 

 closely allied, is found in Burma, the Malay Peninsula, Java, Bor- 

 neo, etc. 



9. Micrixalus borealis, sp. nov. 



(Plate ii, fig. 2.) 



Closely allied to Rana tenasserimensis ,^ Sclater, from which 

 it may be distinguished by the small size of the disks on its 



1 P. Z. S., 1892, p. 345, pi. xxiv, fig. 4, and List Batrachia Ind. Mus., p. 8 

 (1892). 



