898 MR. S. 8. FLOWER ON THE REPLILES AND [Dec.1, 
Mr. Hervey. A Frog in the Raffles Museum, Singapore, labelled 
“‘ Malacca,” is apparently of this species, but it is in a bad state of 
preservation, and the back is quite smooth, without the tubercles 
which are present in Mr. Hervey’s specimen ; both are females. 
Hab, India, Malay Peninsula. 
5. Rana macropon, Kuhl. (Plate XLV. fig. 1.) 
Rana fusca, Stol. J. A. 8S. B. 1878, p. 115. 
Rana macrodon, Blanford, P. Z. 8. 1881, p. 225, pl. xxi. fig. 4 
(upper view of head); Boul. Cat. Batr. Sal. p. 24, pl. i. fig. 4 
(inside of mouth). 
As first pointed out by Mr. Blanford, there seem to be two varie- 
ties of this species, very different in appearance. The specimens I 
collected at Penang are so different from those I got at Singapore, 
as to appear to be of distinct species: but on comparing them 
with the large series in the British Museum from many different 
localities in the East Indies, I cannot find any constant characters 
by which to separate the two varieties. 
Stoliczka found this species in the collection he got from Penang 
and Province Wellesley, but from his description one cannot tell 
to which variety his specimens belonged. F. Miiller mentions a 
specimen of Rana macrodon (Giinth. Cat. Batr. p. 8) from Malacca 
in the Bale Museum (Verh. naturforsch. Ges. Basel, vii. 1882-85). 
The following description will, I trust, be of use in identifying 
this Frog: provisionally I have called the broad-headed form the 
Singapore variety, and the narrower-headed the Penang variety. 
Vomerine teeth on two straight ridges running obliquely back 
from the anterior angle of the choane, and converging behind soas 
to meet, if prolonged, nearly in a right angle, but rather widely 
separated ; a strong osseous transverse ridge behind the choane ; 
lower jaw with two fang-like bony prominences in front, fitting 
into hollows inside the upper jaw ; when the mouth is closed, the 
size to which these prominences are developed is variable. 
Head large, this is especially so in the adults of the Singapore 
variety. In the typical Penang variety the snout is usually 
pointed, but very variable in shape; in the Singapore variety it is 
broad and rounded at the end. Blanford says of the snout of the 
Singapore variety, “no trace of canthus rostralis,’ but in my speci- 
mens, though but slightly developed, it is at once apparent; no 
constant distinction can be made between the two varieties in 
regard to the amount of depression of the snout. Occiput more 
or less swollen at the sides. The nostrils are nearer the end of 
snout than the eye; their distance apart in the Penang variety is 
equal to or greater than the interorbital space, while in the Singa- 
pore variety it is considerably less: this character will be found 
usefulin distinguishing between the two varieties, but it does not 
hold good for young specimens. In all seven Penang specimens 
the breadth across the gape is about equal to the distance from 
angle of mouth to end of snout, and considerably less than the 
