Vor. III] VAN DENBURGH—REPTILES—CHINA, JAPAN, FORMOSA 201 
metatarsal tubercle. This tubercle is slightly developed in one 
specimen (No. 23753) from Okinawa. There appears to be no 
difference in the width of the dermal margin of the fingers. In 
all the members of the group the distance from the tip of the 
coccyx to the end of the sacral diapophysis is usually less than 
the width of the head, and greater than the distance from the 
tip of snout to center of tympanum; but it may be equal to 
that, or greater, in all except perhaps the Japanese, of which 
the series at hand is too small to show this variation. In speci- 
mens from all these localities the heel may reach the posterior 
border, the middle, or the anterior border of the eye. There 
seem to be no differences in the vomerine teeth, or the size of 
the tympanum, digital disks, or web. On the other hand, in 
both Japanese specimens, when the head is viewed from the 
side, the nostril appears to be very nearly midway between the 
eye and the end of the snout, while in a very large majority of 
the Loo Choo and Formosan examples the nostril is distinctly 
anterior to this point. When the legs are folded and held at 
right angles to the axis of the body, the heels do not meet in 
the specimens from Japan proper, whereas they do meet in 
73.4% of the frogs from Amami O shima, 97.8% of those from 
Okinawa, 99.1% of those from Ishigaki shima, and 88.8% of 
those from Formosa. 
As one passes from the north southward, the dark mark- 
ings on the legs and sides of the body tend to lose the character 
of reticulations or cloudings (Japan and Amami O shima) and 
to become discrete dots (Okinawa), spots (Ishigaki), or 
blotches (Formosa). These dark markings usually are lack- 
ing in the young, and their character is not constant in the adult 
Loo Choo specimens, although it probably is in the adults from 
Formosa. 
In view of these facts it seems best to retain in use the four 
names that have been proposed for these tree-frogs, but to 
regard P. viridis and P. owstoni as subspecies of Polypedates 
schlegelii. 
The principal characters of Polypedates schlegelii may be 
expressed in the following: 
Diagnosis.—Fingers nearly half webbed; heel without der- 
mal appendage; vomerine teeth in two straight, but oblique, 
