Vor. III] VAN DENBURGH—REPTILES—CHINA, JAPAN, FORMOSA 209 
In a few specimens the throat is nearly unicolor; in a con- 
siderable number it is light with converging dark lines; but 
in most it is dark with light spots or streaks. 
Japalura swinhonis mitsukurii (Stejneger) 
I am unable to find any constant point of difference be- 
tween specimens of Japalura from Botel Tobago, and from 
Formosa. The differences in proportions which have been 
suggested as distinguishing characters do not hold good. In 
the Botel Tobago lizards the width at the superciliaries is con- 
stantly less than the length of the third toe, but the same pro- 
portions are to be found in a number of Formosan specimens. 
Still a majority from the latter locality have the superciliary 
width greater than the length of the third toe without claw. 
The number of specimens from Botel Tobago is too small, 
to enable us to reach any very satisfactory conclusion, and for 
the present it seems best to regard the Botel Tobago specimens 
as a doubtful subspecies. 
Japalura polygonata (Hallowell) 
We have examined one hundred and nineteen specimens 
from Naze, Amami O shima, fifteen from Nago and Naha, 
Okinawa, eight from Miyako, eight from Ishigaki, and six- 
teen from Funaoke, Iriomote. One hundred and forty-eight 
of these have no keeling of the infralabials, while a weak keel 
may be made out in one specimen from Ishigaki and two from 
Iriomote. Thus in 98% of the Loo Choo specimens the in- 
fralabials are smooth, while in 98.6% of the Formosan exam- ~ 
ples they are keeled. These Loo Choo lizards have a definite, 
though not continuous, row of enlarged scales on the back, 
separated from the crest row by about two or three rows of 
smaller scales. In the Formosan species no definite row of 
this description is to be found, the scales near the dorsal row 
being more nearly equal in size. The throat in Loo Choo 
specimens usually is light unicolor or, less frequently, with 
narrow, dark, converging lines. The Formosan and Botel 
_ Tobago specimens have dark throats with whitish markings 
showing either as spots or as transverse bands. 
