1912.] N. Annandai,e : Batrachia. 13 



subarticular tubercles well developed ; a somewhat elongate but 

 not very prominent inner metatarsal tubercle; no corresponding 

 outer tubercle. 



Colouration. — Dorsal surface purplish-brown irregularly marked 

 with dark slate-colour; irregular paler markings on the sides; 

 limbs irregularly marked; fingers and toes barred with alternate 

 brown and grey stripes. Ventral surface dirty white, shaded pos- 

 teriorly with dark grey ; dark grev spots on throat and an irregular 

 reticulation of the same shade on the chest. Ventral surface of 

 hands and feet grey, with the tubercles white; a white spot on the 

 soles in the place where an external metatarsal tubercle would be. 



Habitat. — Egar stream between Renging and Kotung (c)-i-i2). 



Type (a unique specimen). No. 16929 in the Indian Museum 

 register of Reptiles and Batrachia. 



13. Rhacophorus microdiscus, sp. nov. 

 (Plate ii, fig. 4.) 



This species is easily recognized by the small size of its digital 

 disks. 



Habit slender. Length from snout to vent 29 mm. 



Head\3.rgQ, flat, broadly ovoid; snout rounded in front, by 

 no means prominent, rather shorter than the orbit; nostril much 

 nearer tip of snout than eye; canthus rostralis indistinct; loreal 

 region concave, oblique; tympanum distinct, close to ej^e; its 

 diameter about ^ of that of ej^e ; interorbital space about as wide 

 as upper eye-lid, flat. 



Mouth. — No tooth at apex of lower jaw; no papilla on the 

 tongue; choanae large; vomerine teeth in two short, ridge like 

 series running obliquely backwards and inwards from a point near 

 the anterior inner margin of the choanae but widely separated from 

 one another. 



Limbs slender but short. Fingers with a slight rudiment of 

 a web; their disks very small, that on the third being much less 

 than ^ as wide as the tympanum ; subarticular tubercles well 

 developed ; a large rounded inner metacarpal tubercle. Tibio- 

 tarsal articulation barely reaching the eye ; disks of toes like those 

 of fingers ; feet less than half webbed ; subarticular tubercles well 

 developed ; an elongate but by no means prominent inner metatar- 

 sal tubercle. 



Skin of dorsal surface, throat and chest smooth ; that of belly 

 separated into polygonal areas by a very distinct network of 

 grooves; on the posterior part these areas gradually take the form 

 of low conical tubercles ; isolated rounded tubercles on basal part 

 of thighs. No dorso-lateral fold ; an indistinct fold running from 

 above tympanum to shoulder. 



Colouration. — Dorsal surface pale slate-grey irregularly marked 

 with darker grey and powdered with black ; dorsal surface of limbs 

 indistinctly barred ; outer margin of thigh reddish; ventral surface 

 dirty white. 



