the central zone of the cruise. On 27 July as many as 32 were around the 
ship when it was not in command, and on the 28th,23 were following when 
the ship was under way. Black-foots were also noted off the west coast, 
* 
but were not seen after noon on the 30th. 
Sooty and Slenderbilled Shearwater 
One individual of each species was identified on 24 July within 200 
miles of the Oregon coast. Others identified only as shearwaters on the 
m 
24th were probably one of these two species. 
Wedge-tailed Shearwater 
None were seen until the ship was within 200 miles of the Hawaiian 
* 
Islands on 1 August. Wedgetails were more common than the count of forty 
indicates as identification of birds in distant flocks was impossible. No 
. • i 
dark phase birds were seen. 
Christmas Island Shearwater 
One was seen during the day on one August and a second at night on the 
same day. 
Newell f s Shearwater 
Five birds were seen on the first within 200 miles of Oahu. 
/ 
Dark-rumped Petrel 
One was seen flying to the northwest on the first. 
Mottled Petrel 
One was seen on the 24th within 150 miles of the Oregon coast. 
Pterodroma externa (Includes Juan Fernandez and White-necked Petrel) 
None were seen before the 31st. Because this species would not be 
land-oriented in the northern latitudes, it would appear that water 
temperature or some other factor determines the range above the equator. 
