348 Mr. G. A. Boulenger on a 



The specimens described are unfortunately not adult, and the 

 male is still unknown to me. 



The tadpole, although more nearly resembling- that of R. 

 temporaria than any other European species, differs from all 

 its congeners in having the mouth quite as Avide as the inter- 

 orbital space, which equals once and a half the distance between 

 the nostrils. The labial dentition is more developed even than 

 in B,. temporaria, the teeth forming four or five series in the 

 upper lip, of which the second is but narrowly interruj^ted in 

 the middle, and four in the lower lip ; the latter are either all 

 continuous, occupying nearly the whole width of the lip, or the 

 fourth (counting from the labial edge) is broken up in the 

 middle. A single series of papillae on the lower labial edge. 

 Tail obtuse, once and two thirds the length of the body, its 

 depth about one third its length. Grey above, closely 

 speckled with black, whitish beneath ; muscular portion of 

 tail reticulated with black ; caudal crests with small black 

 spots or arborescent markings. 



millim. 



Total length 48 



Body 18 



Width of body 12 



Tail 30 



Depth of tail 10 



It was through the tadpoles that I became aware of the 

 existence in Greece of the species which I have now the 

 pleasure of describing. About a year ago I received from 

 Dr. Kriiper, of Athens, several frog-larva?, obtained on the 

 Parnassos, which differed from anything I had seen before. 

 One of the specimens was sufficiently near transformation to 

 show remarkably long legs ; and as Rana Latastii^ of which 

 I did not know the tadpole nor could refer to any description 

 of it, had recently been recorded by Boettger* from the 

 neighbouring Korax Mountains, I thought I might safely 

 refer it to that species. But having sent one of these larv^ 

 to M. Heron Boyer, the well-known connoisseur of Euro- 

 pean tadpoles, I was informed by him that it could not 

 belong to R. Latastiiy of which he had himself reared the 

 tadpole ] his letter was kindly accompanied by a specimen of 

 the R. Lafasiu-laiya, which, when I examined it a short 

 time ago, left no doubt in my mind that my Parnassos tad- 

 poles were erroneously named. The specimens obtained by 

 V. Oertzen in the Korax Mountains being all in Berlin, as I 

 was informed by my friend Dr. Boettger, to whom I had 



* Sitz. Akad. Berl. 1888, p. 148. 



