128 ZOOLOGY OF THE FAR EAST. 
Rana cancrivora, Gravenhorst. 
(Plate V, fig. iv). 
Rana cancrivora, Gravenhorst, Repi. Mus. Zool. Vralisl., p. 41. 
? Rana vitfigera, Wiegmaun, N.A. Ac. Leop. XVII, p. 255, pi. xxi, fig. i. 
Rana tigrina var. angiistopalmata, van Kampen in Weber's Zool. Ergehn. Nied. Ost.-Ind. 
IV, p. 388, pi. xvi, figs. 3&, 3c. 
Rana schlueteri, Stejneger, U.S. Nat. Miis. Bull. 58, p. 142. 
Rana tigerina var. schlueteri, Barbour, Mem. Mits. Comp. Zool. Harvard, XLIV, No. i, 
p. 64. 
Rana tigrina, Boulenger, Fauna Malay Peninsula, Repi., p. 234 (in part, not the figure). 
L,ARVA. 
1907. Ra7ia ligrina, var. angiistopalmata, van Kampen, op. cit., p. 389. 
1909. Rana tigrina, id., Natuurk. Tijdsch. Ned.-Ind. LXIX, p. 33. 
The differential characters of this species are as follows: — 
1. The size is still smaller than that of R. rugtdosa, very large specimens not 
exceeding 90 mm. in total length. The habit is intermediate between that 
of R. rugulosa and R. tigrina. 
2. The snout is still blunter than in R. rugulosa, but the sides of the head are 
as a rule a little straighter. The length of the head is distinctly less than 
the breadth in large specimens. The nostril is nearer the tip of the snout 
and the tympanum is more remote from the eye. 
3. The vomerine teeth are often less well-developed than in R. tigrina, but seem 
to be somewhat variable. I have seen specimens in which they agree 
with those of R. schlueteri as redescribed by Stejneger, but this feature is 
not peculiar to Bornean individuals. 
4. The webbing of the feet is much less extensive, largel}^ owing to the margin 
being distinctly emarginate between the toes. The toes themselves, though 
not actually pointed, are more slender. 
5. There are no pale stripes on the sides of the head and fore quarters even in 
quite young specimens, but a black band often extends backwards from 
each nostril over the eye and the tympanum, bending downwards to form 
a black border to the posterior margin of the latter. Both lips are heavily 
barred with black and spotted with white. The throat is usually mottled 
or marbled with brown and the mottling sometimes extends all over the 
ventral surface. There is often a white spot at the proximal end of the 
external metatarsal fold and a white line on the internal tarsal margin ; 
otherwise the feet in adult specimens are heavily pigmented. 
Larva. The larva has been described by van Kampen, According to his account 
it can hardly be distinguished from that of R. limnocharis. He states that the 
mouth-parts are identical and the only differential characters he gives are based on 
proportions and colouration, both of which are variable in the tadpole of R. limno- 
charis. 
1829. 
1834- 
1907. 
1907. 
1912. 
1912. 
