10. Snl-a- dactylatra One individual, an immature, was observed at 1605 
Oct# 5 • 
11. Sula leucogaster - a single individual was seen shortly after 
leaving the harbour on Oct. 3* 
12. Sula sula This species was the booby regularly encountered 
at sea. A total of 18 were recorded and three were collected, two 
Oct. 6 by {Sibley and Bratley and one Oct. 7 by Clapp. 
13* Fregata minor This species was encountered in steadily 
diminuishing numbers as we left the harbor. Six were seen the first 
day, one the second day, and none were seen subsequently. 
14. Sterna fuscata The most common bird, but not the species 
most frequently observed. A large number of flocks of this 
species, occasionally intermixed with the following were seen on 
Oct. 8. 
15. Anous stolidus A single bird, probably this species, was 
seen as we left the ha rbor, another was seen on Oct. 4 and a small 
group intermixed with a flock of Sooty Tern was seen on the 8th. 
16. Pluvialis dominica A single individual was seen at 1032 on 
Oct. 5. 
17. Arena ria interpres Seen sporadically throughout the trip. 
Two were seen Oct* 5# two Oct* 7* und one Oct. 8* Two were 
collected, one at 1025 Oct. 7 by Bratley and the other at 1803 
the same day by Huber. 
