62 



Records of the Indian Museum. 



[Vol. XV, 



on the foot, almost parallel to the basal part of the toe, and has a much 

 stiffer consistency, being strongly cornified in old frogs. When speci- 

 mens are preserved in spirit, however, the tubercle is apt, owing to the 

 shrinkage of the soft tissues of the foot, to collapse in such a way that 

 its concave surface lies flat on the sole and is thus entirely concealed. 

 This has occurred in all the old specimens that I have examined. 



^a. 



2b. 



Figs. 2, 2rt, 26. — Right foot of Rana cmssa from Madras (x 2), with metatarsal 

 tubercle further enlarged. 



The colour of living specimens from Madras is similar to that of R. 

 tigrina, but much duller, a dull brown being substituted for the greens 

 and yellows, and with the exception that the throat is spotted with 

 black. In general appearance the frog seems to be very like R. rugulosa, 

 and Indian specimens that I referred to as being intermediate between 

 that species and R. tigrina actually belong to R. cras^a. 



I have been able to examine only two tadpoles that can be assigned 

 to this species. In one of them the hind legs are fairly well-developed, 

 while in the other the toes are alreadv differentiated. So far as it is 



