248 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4ru SEr. 
Okinawa and Miyakoshima. We are now able to add to these 
localities Amami O shima and Kikaiga the easternmost island 
of the group. 
Our collection contains one hundred and fifty-one specimens, 
as follows: 89 from Kikaiga, 42 from Amami O shima, 18 
from Okinawa, and 2 from Miyako. The species was not 
found in either Ishigaki or Iriomote shima, so that it would 
seem that Miyako shima is the southernmost point of its dis- 
tribution. 
Throughout this extensive range the species shows but little 
variation. Thus, all the specimens have one inguinal pore on 
each side. Nevertheless, certain tendencies toward differenti- 
ation appear when one critically examines large series from the 
various islands. It is unfortunate that there are at hand only 
two specimens from Miyako, for these seem to differ most. 
The two specimens from Miyako each have eight rows of 
large ventrals (the outer being a little smaller) with two more 
rows of smaller keeled scales on each side just above them. 
None of the lizards from the more northern islands show more 
than six rows of full-sized ventrals, although a very few from 
each island (nine in all) have a row of much smaller keeled 
scales just above. All of the ventrals are keeled in all speci- 
mens. 
The dorsal rows, both large and small scales, usually are 
more numerous on the anterior part of the back than pos- 
teriorly. Thus, in the Kikaiga, Amami and Okinawa speci- 
mens, the count most often is of large scales four rows ante- 
riorly and three posteriorly, and of small scales two rows ante- 
riorly and one posteriorly. The large rows vary from three 
to five, and the small from two to none. A few specimens 
from Amami and Kikaiga (as Nos. 21089, 21031, and 21131) 
have dorsals all nearly equal in size, so that one counts eight 
or ten rows. In the two specimens from Miyako, on the other 
hand, there appears a tendency toward reduction in the num- 
ber of dorsal rows; so that we find in one example three large 
rows on each side, separated anteriorly by two, and posteriorly 
by one small row; while in the other example the arrangement 
is the same, except that the large rows are reduced to two 
posteriorly. 
