556 Mr. G. A. Boulenger on new Batrachians. 
hinder side of thighs with dark vermiculation; lower parts 
white, with the exception of the throat and breast, which are 
grey, marbled with blackish and with two longitudinal white 
bands. Male with a large external vocal sac-in a fold on 
each side of the throat. 
From snout to vent 65 millim. 
Four specimens (male and female and two young), from 
McCarthy Island, Gambia, presented by Mr. J. 8. Budgett. 
This species is very closely allied to R. moeruensis, Blgr., 
from Lake Mweru. It differs principally in the still shorter 
fingers, the first of which does not extend beyond the second. 
Rana Swinhoana. 
Vomerine teeth in two oblique series between the choane. 
Head much depressed, slightly broader than long; snout as 
long as the diameter of the orbit, rounded; canthus rostralis 
obtuse ; loreal region not very oblique, concave; nostril 
equally distant from the end of the snout and from the eye ; 
interorbital space as broad as the upper eyelid ; tympanum 
distinct, one half to three fifths the diameter of the eye. 
Fingers moderate, first not extending beyond second ; toes 
entirely webbed; tips of fingers and toes dilated into well- 
developed disks, which are much smaller than the tympanum ; 
subarticular tubercles rather small; a small, oval, inner 
metatarsal tubercle. The tibio-tarsal articulation reaches the 
tip of the snout. Skin smooth, granular on the side; no 
dorso-lateral fold. Brown above, with small darker spots; a 
dark canthal streak and a dark temporal blotch ; a whitish 
streak on the upper lip; limbs with rather indistinct dark 
cross-bars; lower parts white. 
From snout to vent 80 millim. 
Two female specimens from Bangkimtsing, Formosa, 
presented by Mr. J. D. La Touche. 
The nearest ally of this species, named in memory of the 
late Robert Swinhoe, the first explorer of the Reptile-fauna 
of Formosa, is 2. lévida, Blyth (chloronota, Gthr.). 
Hylambates cassinovdes. 
Vomerine teeth in two small groups between the choanz. 
Head as long as broad; canthus rostralis indistinct ; tym- 
panum about half the diameter of the eye. J ingers free, 
toes webbed at the base, dilated into small but very distinct 
disks ; a moderately large oval metatarsal tubercle. Hind 
limb very short, the tibio-tarsal articulation reaching barely 
the axil. Skin smooth above; belly and lower surface of 
