GKEEN-BACKED TREE-TOAD. 
365 
inches. All the toes joined by a membrane ; the 
fore feet rather semipalmated ; all the toes, except 
that answering to the great toe, which in this animal 
is very short, having broad, round, soft, and spongy 
extremities. Most of the joints on the inside of the 
feet had lesser sponges, which, being clammy, enable 
these creatures to ascend the loftiest trees with the 
greatest ease and facility. The toe corresponding to 
the thumb in man, answered much the same purpose 
in this creature, which by this member arrested one 
of my fingers. The head is of a cordate form ; the 
eyes large and prominent ; the irides speckled in a 
manner so elegant as to exceed description. The 
space beyond the eyes is hollowed, and rough like a 
file. Ears covered with a purplish membrane. The 
body, when infiated, taper and triangular. Body, 
above, dull green, as were the anterior parts of the 
thighs. Sides near the groin, shy^blue spotted with 
purple. Abdomen beneath the thighs covered with 
small tubercles of a dull flesh-colour. Feet, both 
fore and hind, purple, and clouded with the same as 
the hind part of the thighs. Mouth extremely wide ; 
tongue fixed. Under the jaw' whitish red, or incar- 
nate, with purple spots'' 
From a carefully coloured drawing which accom- 
panies the above description, it is evident that this is 
congenerous with my Lichened Tree-toad ; but the 
colours are so different as to warrant the conclusion 
that it forms another species. The green hue of the 
upper parts, destitute, apparently, of the marbled 
intermingling of other colours, which is so character- 
istic of all the described Trachycephali, the sky-blue 
