Reptiles and Batrachians from Madagascar. 245 
missure of the mouth and the extremity of the casque exceed- 
ing the length of the mouth), the larger tubercles on the 
canthus rostralis, and the presence of two short, flattened, 
tuberculate, bony nasal processes, which are directed down- 
wards and slightly outwards. 
Total length 37 centimetres. 
Riana flavicrus. 
Vomerine teeth in two short transverse series just behind 
the level of the choane. Head moderate, as long as broad ; 
snout subacuminate, truncate at the end, as long as the 
diameter of the orbit; nostril near the end of the snout; can- 
thus rostralis angular; loreal region concave; interorbital 
space a little narrower than the upper eyelid; tympanum 
distinct, nearly as large as the eye. Fingers and toes slender, 
the tips dilated into smal] disks; first finger not extending 
quite so far as second ; toes nearly entirely webbed ; subar- 
ticular tubercles small; a small inner metatarsal tubercle. 
The tibio-tarsal articulation reaches beyond the end of the 
snout ; tibia as long as the vertebral column. Skin smooth, 
belly and anal region granular; no dorso-lateral fold. Dark 
olive-grey above, with a few scattered minute white dots and 
a paler grey dorso-lateral band, bordered below by a blackish 
lateral band passing through the tympanum ; lips pale grey, 
with black dots; groin with yellow marblings; limbs with 
black cross bars; lower surface of leg yellow, spotted and 
marbled with black; the remainder of the lower surfaces 
greyish, with indistinct brown mottling. Male with internal 
vocal sacs. 
From snout to vent 55 millim. 
A single male specimen. 
Rana redimita. 
Vomerine teeth in two small groups far behind the level of 
the choane. Head moderate; snout subacuminate; canthus 
rostralis angular; loreal region concave ; the diameter of the 
orbit equals its distance from the nostril ; interorbital space 
as broad as the upper eyelid; tympanum distinct, nearly two 
thirds the diameter of the eye. Fingers and toes moderate, 
the tips dilated into small disks; first and second fingers 
equal ; toes half-webbed; subarticular tubercles moderate ; 
a small inner metatarsal tubercle. ‘The tibio-tarsal articula- 
tion reaches the eye; tibia three fourths the length of the 
vertebral column. Skin smooth, granular on the belly and 
