1853.] : 491 
RanipDEtiA, Girard.—Palate without teeth. Tongue elongated, subelliptica , 
posteriorly slightly emarginated and free upon one-third of its length. Tym- 
panum not visible. Eustachian tubes minute. Fingers and toes subcylindrical, 
tapering into a point and perfectly free.—RaniDELLa siGNirERA, Girard. 
With no specimen of Crinia georgiana at our command, we have been unable 
to compare critically the characters of Crinias as just subdivided. For this 
reason we do not raise Ranidella to the rank of a genus for the present. If fu- 
ture investigations do not bring to light other species of each of these subdi- 
visions, we shall not hesitate to consider Crinia georgiana and Ranidella sig- 
nifera as congeneric species, in which the character of the vomerine teeth loses 
that importance which it has elsewhere. 
Ranidella, as circumscribed above, is related to Ozyglossus and Letuperus in 
the absence of teeth on the palate, differing from both, however, in having its 
tympanum entirely hidden and its toes perfectly free. 
i Crinia georgiana is an analogue, in Australia, of the South American Pleuro- 
emas. 
WAGLERIA, Girard.—Vomerine teeth disposed on a single and very long trans 
verse row, situated behind the inner nostrils. Tympanum small and not very 
distinct. Toes bordered by a membranous fold in the male. Tongue but slightly 
notched posteriorly. 
Obs.—WacLeRIA PERONII (C. peronti, D. and B.), and W. porsauis (C. dor- 
salis, Gray, should the latter prove specifically distinct from the first), are the 
two species which constitute this genus. Both species are natives of New Hol- 
land, and of the first, specimens were collected by the Exploring Expedition 
in the south-eastern part of Australia. The latter we only know through the 
brief description of J. E. Gray. 
KASSINA, Girard.—Vomerine teeth disposed in two V-shaped groups, situ- 
ated behind the inner nostrils. Tympanum not distinct. Tongue cordiform, 
emarginated behind. Fingers free, the first shorter than the second. Toes entirely 
deprived of membrane. Skin perfectly smooth. 
Obs.—KassINa SENEGALENSIS (Cystign. senegalensis, Dum. and B.) is the only 
species hitherto known of this genus, the diagnosis of which may hereafter re- 
quire some slight modifications, upon the reception of other species presenting 
¢he same disposition of the vomerine teeth. 
Thus, the genera Leptodactylus, Cystignathus and Pleurodema are American ; 
the genera Wagleria, Crinia and Ranidella are Australian, and the genus Kassina 
is African. 
From want of specimens, and accuracy in their descriptions, we have not been 
able to determine, generically, Cystignathus aeneus, Guich., C. schomburghit, 
Trosch., and C. sylvestris, Tsch., all three from South America. The latter, 
apparently, belongs to the genus Cyst¢gnathus proper, but seems to be provided 
with a much smaller number of teeth, and likewise situated more anteriorly than 
is usually the case in that group. The visibility of the tympanum and the pre- 
sence of a partial membrane to the toes are strongly suggestive of that genus. 
Ranipz. 
1. Lepropactytus seRiALiIs, G.—Greenish brown on the head and back; yel- 
lowish brown on the sides and legs, with series of black macule. A post-orbita 
vitta tapering into a point towards the shoulder. Margin of the jaws maculated 
with black and white. Vomerine teeth disposed upon angular arches. Tongue 
cordiform, posteriorly free upon one third of its length, slightly emarginated at 
both extremities. Toes with a rudimentary membrane at their base and along 
their margin. Skin with indistinct longitudinal dorsal folds, otherwise smooth. 
Obs.—Allied to L. typhonius, but distinguished from the latter by the struc- 
ture of the toes. 
Locality.—Rio de Janeiro, 1839. 
