Two of the most
interesting specimens lately received, belong to a new genus of frogs
which appear to be peculiar to Australia, which I shall now proceed to
describe: -
GENUS PERIALIA. FAM. RANIDAE. - Tongue nearly circular, entire; palate
concave, with two groups of palatine teeth between the orifices of the
internal nostrils; jaw toothed; head smooth, high on the side; mouth
large; eyes convex, swollen above, tympanum scarcely visible; back rather
convex, high on the sides; skin smooth, not porous; limbs rather short;
toes 4.5, tapering to a point, nearly free, the palms with roundish
tubercles beneath; the fourth hind toe elongate, the rest rather short;
the ankle with an oblong, compressed, horny, sharp-edged tubercle on the
inner side at the base of the inner toe; the male with an internal vocal
sac under the throat.
This genus agrees with SCIAPHOS, PYXICEPHALUS, and PELOLATES, in having a
large, sharp-edged tubercle on the inner edge of the ankle, but it
differs from them at first sight, by the head and body being compressed
and high, the mouth very large, and the eyes convex on the side of the
forehead.
PERIALIA EYREI, t. 2. f. 3. - Olive, sides of the face, and body blackish
brown; face varies with white streak; the sides of body marbled with
unequal white spots; limbs brown and white marbled; under side of the
body whitish.
