Vou. III] VAN DENBURGH—REPTILES—CHINA, JAPAN, FORMOSA 191 
the tarsus when the legs are folded and held at right angles to the axis 
of body. Heel reaches a little beyond anterior border of eye. A strong 
dermal fold from eye to tympanum and along the side. A strong pectoral 
fold. Large external vocal sac. 
The color above, in alcohol, is uniform bluish gray, doubtless green in 
life. This color extends down the upper surfaces of the limbs on {to 
the external digits. There is a trace of a narrow gray line from nostril 
to eye. There are no other dark markings except a few indistinct gray 
dots on the sides of the body, the front of the thigh, and the back of the 
thigh and leg. The lower surfaces are uniform yellowish white, faintly 
clouded with gray on the vocal sac. 
Variation.—With fifty-seven specimens at hand, but little 
variation appears. There is practically no variation in color. 
The dark spots of H. chinensis are always absent in this 
species. The heels overlap about the width of the tarsus in all 
these specimens. The heel reaches only to the middle of the 
eye in two, to the nostril in two, and to or slightly beyond the 
anterior edge of the eye in fifty-three. The tibia rarely is a 
little less than half the length of the head and body, but usually 
is more than half this measurement. 
Relationship.—The slightly more posterior position of the 
vomerine teeth, the overlapping of the heels, the general shape 
of the head and body, and the uniform green coloration above, 
indicate relationship with H. chinensis, nothwithstanding the 
fact that the absence of the showy black spots and red-brown 
head-streak give a certain resemblance to the Hyla of Japan. 
The following measurements, first, of the type of this species, 
second, of a Formosan specimen of H. chinensis, and third, 
of a Japanese specimen of Hyla arborea japonica, may be use- 
ful. All are males. 
SHOU tO venti las cae cia ok 33. mm. 33.4 mm. 32.3 mm. 
Snout to tympanum ..... ONG a Oh 94 “ 
Tympanum to vent ...... DASA Ai 2 Ole BA iis 
Widthiok ahead sauees LA al ae LZ lS}. e 
Horeidimbin eas sone TASER Ma Dey ne 23 ii 
Telshaal Ri eal phot sey ees eM ene Bay SF Bal) He 52: 
ARID I aera rea none craiatae TS a IG iat 15: yy 
Heel to tip of longest toe.25 “ Za tn DAS o 
It will be seen that the new species has a much longer 
tibia, and that the Japanese form has a broader head. © 
Distribution.—No tree-toads have been recorded from any 
of the Loo Choo islands. We have received good series from 
Kikaiga and Amami O shima, but none from any other island 
of the group. 
