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PACIFIC SCIENCE, Vol. XXI, July 1967 
cates that it is quite successful in establishing 
itself in new areas. The species is very wide- 
spread in the Orient and in the Malay States. 
Grant (1957) recorded it from Acapulco, Mex- 
ico; Tanner on Saipan in 1948; in 1950 it was 
recorded from Morotai; Church and Lim 
(1961) recorded it in Java; Larry Richards col- 
lected it from Guam in 1947. In all probability 
representatives of the Mexico population were 
transported by early traders, and the recent 
range expansion is due to equipment and ma- 
terial shipped during World War II. 
Fox Gecko (Hemidactylus garnoti) 
The future of this species in the islands will 
be interesting to follow. At the present time it 
is uncertain whether H. frenatus is replacing 
this species in unpopulated areas. If the fox 
gecko is better adapted to living in forested 
areas, it will probably continue its existence in 
this habitat. If the house gecko is as efficient 
in displacing the fox gecko in remote areas as 
it is in the cities, the future of this long-term 
resident is questionable. The fox geckos have 
been established for many years and probably 
are one of the earliest inhabitants of the islands. 
In Malaya, there are areas where both H. gar- 
noti and H. frenatus live in close association, 
and so it is possible that the two species will 
continue to be sympatric in Hawaii’s fauna. 
Of 12 eggs from the island of Hawaii 
which were laid during the last week of June, 
the largest was 17.0 X 8.9 mm, the smallest 
9.4 X 8.7 mm. These measurements compare 
well with those of eggs of the same species re- 
corded by Cagle (1946) for eggs from a popu- 
lation on Tinian (which had a mean of 12 X 7 
mm). Measurements made 2 weeks later did 
not indicate a significant change in size. Of 
the 12 eggs 7 hatched, and the mean snout- 
vent length of the newborn lizards was 24.08 
mm, the mean total length, 48.0 mm. The 
range of snout-vent length was 26.0-22.5 mm; 
the range of total length was 51.0-45.5 mm. 
These measurements are well within the range 
quoted by Snyder (1917) for Hawaiian popu- 
lations: 39.5-56.0 mm total length. 
The maximum incubation period for eggs 
laid in Hawaii and hatched at room tempera- 
ture (74°F) was 64 days. Cagle (1946) 
hatched a series of eggs of this species in a 
45 -day incubation period. 
Stump -Toed Gecko (Peropus mutilatus) 
There appears to be no significant change 
in the distribution of this gecko. It occurs in 
rather dense populations in some areas and is 
scarce in others. It is found away from the 
city of Honolulu in the back country and is 
quite common at the International Airport on 
Oahu. Females are slightly larger than the males. 
In a series of 17 females measured, the mean 
snout-vent length was 45.60 mm, with a range 
of 39.5-55.5 mm; for 34 males, the mean 
snout-vent length was 43.65 mm, with a range 
of 29.0-57.5 mm. 
IGUANIDAE 
Gray Cuban Anole (Anolis porcatus) 
This species is well established on Oahu at 
the present time. Both large adults and im- 
mature forms are commonly seen in Honolulu. 
The original site of collection was in the Kai- 
muki section of Honolulu. It has spread to 
other nearby sections of the city and to Manoa 
Valley, and is presently established on the north 
side of the island, at Kailua. The first intro- 
ductions were probably imported pet lizards 
which escaped. We can consider this species 
to be a permanent member of the fauna of 
Oahu. It has not been collected from the other 
islands. 
Texas Horned Lizard (Phynosoma cornutum) 
An increasing number of reports and of 
specimens collected indicate that this species 
is probably established as a permanent resident 
of the Hawaiian fauna on the island of Oahu. 
These animals undoubtedly originated from 
escaped pets. They have been found from the 
slopes of Diamond Head throughout Honolulu 
to the xeric areas above Pearl Harbor. No con- 
crete evidence has been obtained to indicate 
that a reproducing colony has been established, 
with eggs and hatchling lizards. Probably this 
lizard is reproducing, since immature speci- 
mens have been obtained from the islands, and 
the 10 or 15 reported is an unusually high 
