Wedge-tailed Shearwater (Puffinus pacificus) 4 light and 1 dark phase collected The distribution of this species was quite interesting, especially when compared to that of the Pterodroma (see maps 5 and 8). Perhaps more interesting, however, are the changes in color phase ratios on tracks transversed by the R/V UNDAUNTED in August-September and the R/V DSJ in October-November. In late August dark phase birds comprised 96 percent (N=132) of the birds along 105°W and 85 percent along 98°W. In November the light phase population was predominant by 8.5:1 in equivalent sections of the track. This change of color phase ratio clearly suggests that there are two Wedgetail populations in the Eastropac area at some times of the year, and that one of these populations had left the area by October-November. In other Eastropac reports it has been suggested that many of the Wedgetails in the survey area are from the Hawaiian group; the information from this cruise further substantiates this hypothesis. Slight additional suggestion may be found from the few specimens of Wedgetails which were collected during this cruise. As the Hawaiian population is now breeding we would expect that any remaining in the eastern area during October-November would be subadults or nonbreeding birds. This is what was noted in the five specimens collected. The distribution of Wedgetails in the survey area (see tables 2 and 3) suggested that the October-November population favored the eastern portion of the North Equatorial Countercurrent with none being recorded below the southern boundary and only one north of the boundary in pelagic portions of the track. A few additional birds were seen within 500 miles of the Mexican coast. Pale-footed Shearwater (Puffinus creutopus) Pale-feet were rarely seen in pelagic waters. Along the coast they were seen uncommonly except off northern Baja where they were common. Christmas Shearwater (Puffinus nativitatis) A single bird travelling southwest was seen at the edge of a rain squall on the fourteenth of November, along 98°W. Common Shearwater (Puffinus puffinus) What were believed to have been two subspecies were seen during the course of the cruise. Most abundant was P.p. opisthalemas which was seen by the thousands off the northern Baja coast. What was believed to have been another subspecies was seen along the Mexican coast and at the mouth of the Gulf of California. It was the writer's impression that these birds were much blacker on the back than their northern counterparts. Farther to sea the Common Shearwater was rare. Their subspecific identification should remain open to question as it is possible some could be Newell's Shearwater from the Hawaiian Islands.