-SO New Species of Hyia and Rana. 



whatever the colour may he, it can scarcely remain un- 

 changed for six months in a preserved specimen ; all that I 

 have ever attempted to preserve, lost their colour in less than 

 two months. There are three principal varieties of this 

 species. 



«. Above cinereous, with a straight, or curved, or angular bar 

 between the eyes ; back with a few spots of dusky, some- 

 times confluent, and forming different figures of irregular 

 shapes ; and sometimes uniting into a line on each side of 

 the body, of greater or less length. 

 (3. Above cinereous, irregularly spotted with darker ; the 



line between the eyes broken into two or more spots. 

 y. Above entirely brown, without spots, exterior part of the 

 thighs not yellow. 



In all these, the dark band on the head, and the white line 

 on the lips, are the only marks which remain constant ; in 

 one variety, even the yellow colour on the thighs vanishes : 

 there are hardly any two individuals alike, and so different 

 are they from one another, that a person who had not ob- 

 served them accurately for a length of time, would be led to 

 think, that there were almost as many species as individuals. 

 3. H. femoralis. Above dark cinereous, or pale brown, ir- 

 regularly marked with a few confluent spots of darker or 

 dusky, the one between the eyes the largest, triangular, 

 truncate behind at the apex, the others oblong, a black, 

 somewhat crenulate and interrupted line extends from the 

 eyes, to the insertion of the hind legs, and another shorter 

 one of the same colour, from the same place to the inser- 

 tion of the fore legs, forming an angle ; the first being 

 bounded above on the fore part with pale cinereous or 

 brown ; beneath whitish, granulate on the abdomen, and 

 underside of the thighs : Head somewhat obtuse, irides 

 golden, thighs longer than the shanks, darker on the ex- 

 terior part, and spotted with yellow, the spots roundish, 

 irregularly placed, and unequal in number : fore and hind 



