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PACIFIC SCIENCE, Vol. VIII, January, 1954 
sequendy, big fishes) are abundant. All 
the birds obtained, including also Anous 
and Gygh, had small squid in their pro- 
ventriculus. They never seemed to go far 
from the island. 
22. Procersterna cerulea saxatilis Fisher 
Only one specimen (purchased in To- 
kyo) obtained in August, 1911, was in 
the former Kuroda, Sr., Collection. 
2 3. Anous stolidus pileatus (Scopoli) 
This noddy was found by Bryan breed- 
ing in good numbers preferably on trees, 
and all stages of the young were seen in 
his visit in August. I found about 200 
birds breeding in separate colonies on 
ruined gas tanks (four in number, about 
10 pairs on each), a small wooden tank, 
and an abandoned tochka, and a few 
birds high up on the top of the wireless 
tower. A few isolated pairs were nesting 
on the beach and coral rocks. Seven ex- 
amples and four eggs were obtained. 
Their flight is different from that of the 
Sooty Tern (slower wing beats), and 
their edged, pointed wings often looked 
like those of a falcon; their large tails 
are very characteristic. They often skim 
near the water surface which they touch 
with their bills, probably to drink. A pair 
was often observed to make a rapid cir- 
cling flight, almost touching each other, 
with very rapid flapping, then to rise 
higher and higher into the sky. This is 
apparently a kind of pleasure or court- 
ship flight. Pair after pair were flying 
rather low over the island between the 
colony and the coast and were often ob- 
served picking up nest materials — small 
sticks, dried grasses, etc.— from the 
ground while fluttering their wings. At 
their colonies they sat closely on the 
eggs, and now and then the whole group 
took wing to circle around the colony 
for a while and then settle again. A few 
were seen at a great height on. the wireless 
tower, sitting and bringing back nest 
materials, and flying until after dark. 
Their voice is quite characteristic, rather 
resembling that of a crow though much 
weaker, and they make two sounds— a 
call note of one syllable and an alarm 
note, translated by Bryan as K-r-uk, 
K-r-u-k. These voices, heard in hot at- 
mosphere, are very impressive. 
Anous differs from Sterna in various 
respects besides external characters and 
voice. The body fat and yolk of the egg 
are yellow instead of orange as in Sterna 
fuscata; the sternum, which is double 
notched posteriorly in Sterna, is single 
notched in Anous; the syrinx, correlated 
with the characteristic voice, is peculiarly 
provided with a gelatinous cover; and 
the caeca are long, not being the small 
attachment usual in the gulls and terns. 
24. Anous minutus marcusi (Bryan) 
The original description is given in 
Bryan’s report based on two adults and 
fledged young. He reports that this spe- 
cies was much less abundant than the 
previous one. The Yamashina Museum 
has two specimens obtained in 1910 (for- 
mer Tokyo University Collection), and 
another is in the Game Management 
Bureau Collection, dated December 4, 
1908. None of this species was found 
during my visit. 
2 5. Gygis alba Candida (Gmelin) 
Bryan reports this species as quite com- 
mon, breeding in jungles, and he ob- 
served many grown chicks. Now it 
apparently does not breed, for the only 
birds seen, which were obtained, were two 
females with reduced ovaries. They were 
flying over the wooded parts and resting 
in Messerschmidia. The basal half of the 
bill is a beautiful cobalt blue, the rest 
being bright black; the iris is almost 
black; the feet are bluish white with 
creamy white webs and black claws; and 
the skin is grayish black. 
There are two specimens in the Yama- 
shina Museum, dated September, 1902 
(Tokyo University Collection), and No- 
