108 RANADA. 
my power respecting it; and on writing to Sir William 
Jardine upon the subject, I obtained from him, with his 
accustomed kindness and liberality, the opportunity of 
examining the identical skeleton upon which Dr. Stark’s 
notices were made. My excellent friend Bibron also 
kindly sent me several specimens of the true 2. esculenta, 
and from these data I came to the conclusion that the Scot- 
tish Frog is a new species, to which, from its only known 
locality I gave the name of #. Scotica. During the last 
spring, however, I received, from Mr, Wolley of Edin- 
burgh, numerous specimens of both sexes, and of various 
ages of the Scottish Frog, and the result of the most care- 
ful examination and comparison which I am able to make, 
is the conviction that it is nothing more than a very large 
variety of the Common Frog, 2. temporaria. My friend, 
Mr. Gray, whose accurate and extensive knowledge of 
these subjects, gives great weight to his opinion, and 
Mr. Wing, also of the British Museum, a most acute 
and intelligent observer, have confirmed this opinion; and 
it appears to us that the slight differences which I ob- 
served in the osteology, might have been sexual or even 
merely accidental. I am much indebted to Mr. Wolley 
for his great kindness in enabling me, by a plentiful supply 
of specimens, to determine this point, as well as for other 
similar attentions which I shall have another opportunity 
of acknowledging.* 
The specimens were obtained on the Braid Hills, where 
these large Frogs are very numerous. 
I give in a vignette the crania of the two varieties of 
ft. temporaria, and of the £&. esculenta; and the great 
* M. Bibron has expressed his doubts whether the R. Scoléea may not be 
considered as identical with the common species. Hist. Nat. des Rept. t. 
vill. p. 362. 
