208 CALIFORNIA ACADEMY OF SCIENCES  [Proc. 4TH Serr. 
from the Loo Choo Islands. Stejneger’s suggestion that Dr. 
Hallowell may have had a poorly preserved specimen of Gekko 
japonicus probably is correct. 
Cosymobotus platyurus (Schneider) 
The present collections contain no specimens of this gecko, 
which has been credited to Formosa on the evidence of a sin- 
gle specimen in the Bergen Museum, said to have been col- 
lected by Captain von der Ohe in the early sixties. 
Ptychozoon horsfieldii (Gray) 
Regarding this lizard Dr. Stejneger writes (Bull. U. 5. 
Nata Mins Nios seiips i772); 
“This remarkable species is an inhabitant of the Malayan 
Peninsula, the Natuna Islands, and Borneo. 
“A single specimen presented by Mr. Pryer to the British 
Museum as having been obtained by his Japanese collector in 
the Riu Kiu [Loo Choo] Islands, is the only one thus far 
recorded east and north of the region indicated above. As 
no other collectors have found it in the Riu Kius or the inter- 
vening regions, I may perhaps be justified in expressing a 
doubt as to the correctness of the locality. It may be remem- 
bered that Pryer himself did some collecting in Borneo in 
1880, and it is possible that the specimen in question may have 
become mixed up with the Riu Kiu collection.” 
The large collections now at hand from the Loo Choo 
Islands and Formosa contain no specimens of this lizard. 
There can be little doubt that it does not occur in these islands. 
Japalura swinhonis Ginther 
We have received Japaluras from Kagi, Kosempo, Nanto, 
Tainan, Jenshiko and Kanshirei, Formosa. ‘These all seem 
to represent but one species. This species has keeled infrala- 
bials, while the Japaluras of the Loo Choo Islands have 
smooth infralabials. This character holds in more than 98% 
of the large series at hand, so we are justified in regarding 
the Formosan and Loo Choo lizards as distinct species. 
