192 CALIFORNIA ACADEMY OF SCIENCES [Proc. 47H Ser. 
Rana okinavana Boettger 
This frog was described by Boettger, in 1895, from 
three specimens secured by a Japanese collector for Mr. B. 
Schmacker. These were labeled Okinawa shima. The large col- 
lection which we have received from the Loo Choo Islands 
contains no specimens of this frog from Okinawa, where it 
was sought in vain; but on Ishigaki shima twenty-five speci- 
mens, which seem referable to this species were obtained. 
Boettger’s original description applies so completely that 
a detailed description of them seems uncalled for, but it will 
be well to call attention to certain variations occurring in the 
series now at hand. 
The vomerine teeth normally begin about on a line con- 
necting the posterior borders of the choanae—or a little anterior 
to this—and extend obliquely backward, being separated from 
each other and from the choanae by nearly equal spaces. Nine- 
teen specimens show approximately this arrangement. Two 
specimens have the vomerine patches between the choanae 
(Nos. 22834 and 22845). One specimen (No. 22852) has 
the left patch much in advance of the right, so that the left is 
between, and the right chiefly behind, the choanae. One adult 
specimen (No. 22851) has no vomerine teeth, and two have 
them absent on one side. 
In four specimens (Nos. 22851, 22838, 22847, 22852) the 
nostrils open about midway between the eye and the end of 
the snout. In the other twenty-one examples the nostrils are 
decidedly nearer to the end of the snout than to the eye. In 
No. 22846 the nostril is farthest forward. 
The external metatarsal tubercle usually is not present, but 
five or six specimens (as Nos. 22851, 22835, 22852) show it 
as a distinct, small, round, white knob at the base of the 
fourth toe. ! 
The skin usually is smooth everywhere except on the rump 
and hind legs, but in some specimens the sides bear small warts. 
In two specimens (Nos. 22851 and 22852) the tibio-tarsal 
joints do not overlap. In six (Nos. 22841, 22853, 22847, 
22838, 22842, 22835) they overlap one-half the width of the 
tarsus. In the other seventeen specimens they overlap the full 
width of the tarsus. 
