Kermadec Petrel (Pterodroma neglecta): 6+2?. One intermediate and five dark-phase birds were all found north of 05°N with most in the Countercurrent region. Phoenix/Tahiti Petrel (Pterodroma alba/rostrata): 10. Primarily a bird of the Countercurrent, but one sighting to the south (00°45'N) and one to the north (12°34'N). Murphy Petrel (Pterodroma ultima): 2+1?. The birds at 14°22'N by 118°33'W and 01°53'N by 097°33'W were most likely this species while a third at 12°51'N by 103°36'W may have been. Dark-rumped Petrel (Pterodroma phaeopygia): 2+1?. The two birds definitely identified as this species were both in the southeastern part of the South Equatorial Current nearest the Galapagos Islands and in the coldest waters of the whole area. Juan Fernandez Petrel (Pterodroma externa): 1,613. The major population was centered in the Countercurrent, although some birds were found north to 14°22'N and south to 03°S. The vast majority of birds were undergoing heavy molt, especially noticeable in the outer primaries. Of the 27 birds well observed south of the Countercurrent, however, 92.5 percent showed no apparent molt. This may indicate that birds south of the Countercurrent were late breeding adults or first year birds still moving north. Three birds, found between 06° and 07°N and 111° and 119° W were definitely the western form (P. e. cervicalis). Black-winged Petrel (Pterodroma hypoleuca): 19. These birds were definitely the form P. h. nigripennis. Greatest numbers were found in the Countercurrent, but small numbers were recorded north to 14°27'N and south to the Equator. At no time, however, did they overlap the distribution of Collared Petrels (See FIGURE 3). The few individuals that were seen in the same water type as Collared Petrels were seen on different days. Collared Petrel (Pterodroma leucoptera): 55. These birds were definitely the form P. l. brevipes. Their distribution was primarily throughout the South Equatorial Current, although a few were found north to 05°22'N, See FIGURE 3 for comparison with the preceding species. Cook Petrel (Pterodroma cookii): 101. All but one were recorded along the coast of southern Baja California. The one exception, possibly a migrant, was found at 03°S by 118°22'W. Bulwer Petrel (Bulweria bulweri): 1. A single sighting at 07°04'N by 118°35'W. HYDROBATIDAE The difficulty in distinguishing between the various members of this group makes it nearly impossible to give a detailed and accurate