and circling therein differing from the crustacean. Presently, the frigate birds appeared soaring high above the ship. They have a very hawk-like appearance and are wonderful flyers. There is a pronounced bow or angle in the wings. We mistook the tail at first for feet and thought it was a palm. Soon on turning the work the scissor tail is spreading and closing it. They seemed to be chasing the boobies. The frigate helped us practically into the port. At about 11 A.M. we dropped anchor outside the shallow harbor at Mazatlan. Many Black Vultures were seen at a distance flying over the town. They were noted for their quick wingbeat (as fast as a Cooper's hawk) and for the rounded wing tip with white on the out primary tips. No gulls what so ever were seen. In the town which has many plazas and park, the black-morose Boat-tailed Gracka was very