Remsen, J.V. 1977 Galapagos Storm Petrel Oceanodroma tethys Monterey Bay boat trip [cont] Oct.1 edges of the tail above the tip, but basically the [cont] bird was all white posterior to the rump. I drew this sketch of the < tail immediately after our last observation. The shape of the white was a long rectangle with rounded distal corners. Bothe the leading and trailing edges of this rectangle were cut straight across. The shape of the tail itself was also rectangular - no notch was apparent in the tail. The remainder of the bird was a uniform very dark brownish-gray. No white was noted in secondaries and no white was visible on the flanks when swimming. Flight: the wingbeats were shallow and fluttery like Ashy or Wilson's, but wingbeat was more rapid. Since the bird was only flying short distances at a time and since the stiff afternoon winds were blowing, this may be very different from foraging flight characteristics Of the all dark storm petrels recorded in the N. Pacific, only 4 spp have white rumps - Leach's, Harcourt's, Wilson's, and Galapages. This bird was obviously not a Leach's or Harcourt's - both have the white restricted to the rump itself (does not extend to tail) and are larger than