THE FROGS ALLIED TO RANA DORI^E. 219 



In his recent monograph on the South Asian Ranae, 

 Boulenger has listed under this species (p. 51) specimens of mine 

 from- Daban, Ok Yam, and Koh Chang, single examples in each 

 instance. The one from Daban I now refer to R. m. dabana, 

 the other two, from Ok Yam and Koh Chang, to R. kohchangce. 



Colour in life. Olive greenish or brownish, with darker 

 markings. Throat white, belly and under surface of thighs pale 

 yellow, the two colours usually clearly defined by the fold across the 

 throat. Lips and limbs with dark bars, and a pale bar between the 

 eyes. Iris golden, veined black with a black cross. A broad yellow 

 vertebral stripe occurs in many examples, less often a narrow one. 



Remarks. I found this frog common on the Nakon Sri- 

 tamarat hills (Khao Ram, Khao Ronpibun, Khao Wang Hij}) in 

 February, both on the lower levels and up to 700 metres, where water 

 became scarce. It was never found away from streams, and could be 

 heard croaking frequently both by day and by night. Tadpoles 

 abounded in the shallow puddles and pools, and were obtained in all 

 stages of development. 



The tadpole. This agrees in all essential characters with 

 that of R. kohchangce. 



Two forms were found; a small one in which the length of 

 the body is nearly twice its width and the nostrils are nearer the 

 tip of the snout than the eyes ; and a larger one in which the length 

 of the body is about 1| times its width and the nostrils are equidis- 

 tant between the snout and the eyes. The second form appears to be 

 one in which, owing probably to better nourishment, a, greater 

 development of the body occurs, altering somewhat its proportions. 

 Mouth parts and colouration as in R. kohchangce. 



Dimensions of a specimen of the large form : — total length 

 31, head and body 11.5, depth of tail 5.5 mm. Of the small form : — 

 total length 28, head and body 8.5, tail 3.5 mm. 



VOL. IV, NO. 4, 1922. 



