leech's Storm Petrel A=5 B=0 C=1 
unidentified whlte-ruiapel st orm petrels A=51 B=52 C=31 
Most sightings of white-rumped storm petrels were in the 
broad equatorial belt where the birds have been abundant since 
last fall. Collecting has demonstrated that Leach's Storm Petrel 
is by far the most abundant species present and lower numbers en¬ 
countered during the present cruise Is expected as the birds leave 
for the northern breeding grounds. Harcourt's Storm Petrel was 
not definitely recorded on at-sea observations, but likely was 
present since several were collected in the Southern Grid. 
Bi-rite-tailed Trorlcblrd A=7 B=19 C=ll 
Scattered sightings occurred throughout the cruise with the 
usual higher concentrations north of Samoa and near the Hawaiian 
Islands, both areas which serve as breeding grounds for the species 
Red-tailed Trapletird As20 3=3 C=2 
High numbers (16) were noted upon approach to Johnston Atoll 
on 1 April. The remaining few sightings were scattered throughout 
the at-sea area. 
Blue-faced Boobv A=7 B=63 C=5 
The majority of sightings were in the Phoenix Island area. 
One flock of 40 was recorded off Bnderbury Island. 
Brown Boobv A=2 B=10 C=36 
Practically all sightings were in the immediate vicinity of 
islands. Heavy concentrations were noted north of Samoa and near 
Palmyra Island. 
