230 
L. Y. MÉHELŸ 
21. Phyllomedusa hypochondrialis I)aud. 
Hyla hypochondrialis Daudin, Hist. nat. des rainettes etc., 1803, p. 29, tab. X, 
fig. 1 et Hist. Nat. Rept., Vili, 1802—3, p. 60. 
Phyllomedusa hypochondrialis Boulenger, Cat. Batr. Sai., 1882, p. 430 et 
Proc. Zool. Soc. of London. 1882, p. 264, tab. XIII; Bîtdgett, Quart. Journ. Micr. 
Sc., XLII, 1899, p. 313, tab. XXVIII. 
One specimen ; length 28 mm. from snout to vent. 
Tongue entire. Vomerine teeth none. Snout as long as the diame¬ 
ter of the eye, broadly rounded on its end, its outline looked at from the 
side like a high arch arising from the mouth and extending to the occi¬ 
put ; nostril as far from the eye as half of the diameter of the latter 
canthus rostralis none; loreal region nearly vertical. Lower eyelid trans¬ 
parent in its upper half, but on the upper edge margined with an 
opaque streak ; in the anterior corner of the eye on the opace part of the 
lower eyelid a small, roundish wart very prominent. Tympanum covered 
with skin, about one third of the diameter of the eye. Fingers free, first 
shorter than second, fourth distincly shorter than third ; disks of fingers 
small, scarcely broader than the cross-diameter of the the last phalanx. 
First toe much longer than second, opposable to the others ; disks not 
larger than those of the fingers. Tibio-tarsal articulation does not reach 
the tympanal region. Skin smooth above, granulate beneath : parotoids 
scarcely distinct. 
Coloration. Faded green above. Upper and lower lip white margi¬ 
ned, this marginal streak prolonged behind and extended to the middle 
of the flank, where passings over into the yellow colour of this ; above 
this white streak begins the green colour of the upper surface, below it 
is margined with a faint trace of a violet-brown line. When the limbs 
are folded against the body, as most Tree-frogs are in the habit of doing 
during the daytime, the upper parts are uniform green, but if the limbs 
are stretched out, all the concealed surfaces, viz. the upper and lateral 
surfaces of the humerus, the anterior side of the forearm, the three inner 
fingers, the posterior half of the flanks, the lateral and upper surfaces 
of the femur — with the exception of a narrow green streak on the upper 
side —, the lower surface of the tibia, the inner side of the tarsus and the 
four inner toes, being of an orange colour, marked with transverse violet- 
brown bars. A white line along the outer edge of the forearm and fourth 
finger, and tarsus and fifth toe, margined below with violet. Lower sur- 
fac white. 
This coloration is not only very beautiful, but also very interesting, 
because it, is a surprising example of mimicry. When the animal is siting 
