279. Cymodroma melanogaster.
THE DUSKY-VENTED STORM PETREL.
Male 8". Legs and bill black. Above blackish brown. Tail nearly even, bases of all rectrices except mid pair white. Abdomen in middle sooty black. Southern Ocean, northwards to Bay of Bengal, and in the Atlantic to the Tropic of Cancer. (B. 1537.)
Also C. grallaria. 7 1/2". Legs and bill black. Above sooty black. Back and scapulars grey, edged white. Tail black, bases of lateral rectrices white. Southern seas, north to the coast of Florida.
Also with tail deeply forked:—C. albigularis. 81". Legs and bill black. Above sooty black. Throat, abdomen, and a narrow band across the rump white. S. Pacific Ocean, And G. maestissima. 9 1/2", Legs and bill black. Entire plumage sooty black. Samoa Islands.