White-winged Petrel (Pterodroma leucoptera) Although never a common bird on this cruise, White-wings were regularly sighted on the western half of the track area below the north boundary of the North Equatorial Countercurrent. What were believed to have been two different subspecies were recorded. Most common was P. l. masafuera(?) which was seen regularly in the eastern three quarters of the Countercurrent as well as in waters to the south of the current. What were believed to have been P.l. brevipes were seen on the western leg, north of the range of masafuera. Although the writer is not certain of the subspecific assignment the two forms were given, he is sure that no less than two subspecies were seen. The ones to the south were surprisingly uniform in appearance. The birds were characterized by a very dark head and nape, with a markedly lighter back which had a very prominent "W" pattern. The underwings were white with thick black borders. Most striking however, was an incomplete collar down the side of the upper breast which was almost black. The leucopterans to the north had an interrupted gray collar with indistinct margins; they also had a thinner black border on the underwings than their southern counterparts. Because there is considerable confusion in the writer's mind as to where which forms of leucoptera breed, the subspecies assigned to the above forms may be in error. I am quite certain that the few I called brevipes were in fact brevipes, but the subspecific identifications of the southern form should remain open to question. Phoenix Petrel and Tahitian Petrel (Pterodroma alba and P. rostrata) Because these two species may be confused, all sightings were recorded as Phoenix/Tahitian Petrels. However, the writer feels that both species were present in the area with the Phoenix being the more common of the two. Neither bird was common, however. Virtually all of the sightings were between 10° and 5° north latitude. The habitat preference appeared to be similar to that of the Juan Fernandez Petrels. Kermadec Petrel (Pterodroma neglecta) Compared to the August-September cruises there were very few birds of this species present in the EASTROPAC area. Both light and dark phase birds were seen. Murphy's Petrel (Pterodroma ultima) There was no bird seen on this cruise which could positively be identified as this species. However, a single bird seen sitting with about 50 storm petrels on 23 October was suspected to be a Murphy's Petrel. Harcourt's Storm Petrel (Oceanodroma castro) A total of 39 birds believed to have been this species was seen throughout the cruise. However, because of the difficulty in identifying the dark storm petrels, there were probably many more which were recorded only as white-rumped storm petrels. The distribution of those which were identified