206 CALIFORNIA ACADEMY OF SCIENCES [Proc. 47H SER. 
Polypedates robustus (Boulenger) 
We have received one specimen of this tree-frog (No. 
25043) from Koshun, Formosa. It is so like P. buergeri of 
Japan that the greater extent of the web between the fingers 
seems to be the only constant difference. 
Boulenger’s specimens were from Kankau, Alikang, and 
Kosempo, Formosa. 
Polypedates leucomystax (Gravenhorst) 
Only one Formosan specimen of this tree-frog has been 
recorded, and this one bears no statement of more definite 
- locality. We have received four specimens from Kanshirei 
and one from Koshun, Formosa. Both striped and unstriped 
styles of coloration are shown. In these Formosan examples 
the vomerine teeth are nearer the choanae, and the dark retic- 
ulation on the backs of the thighs is much coarser than in 
Philippine specimens. The general proportions are quite the 
same. Nevertheless, when larger series are at hand, it may 
become necessary to regard the Formosan frogs as a distinct 
subspecies differing from the Philippine in having vomerine 
teeth nearer the choanae, toes a little less extensively webbed, 
metatarsal tubercle somewhat larger, and thigh markings 
coarser. 
Gekko japonicus (Duméril & Bibron) 
This species differs from G. swinhonis in the possession of 
a distinct interdigital web, more numerous dorsal tubercles 
and fewer enlarged tubercles near the ear. 
We have one specimen labeled Eastern Asia, three from 
Shanghai, eleven from Formosa, two from Ishigaki, thirteen 
from Naha, Okinawa, twenty-eight from Naze, Amami O 
shima, and a few from Japan proper. The Formosan speci- 
mens are from Koshun, Kanshirei and Taihoku. 
In this considerable series there appears but little varia- 
tion. The Loo Choo specimens often have smaller chin- 
shields than the Formosan, and the latter tend to have fewer 
plates under the fourth toe than the Shanghai specimens. 
These differences, however, are neither constant nor great 
enough to warrant the recognition of separate subspecies. 
