-129- Hypotaenidia pacifica. Black, with white spots or bars; abdo- men, throat, and eyebrow white; hind neck rusty; breast gray; bill and iris red. No specimens extant? Porzana tahitiensis. Small; generally brownish black; first pri- mary white; other primaries margined with white. No spec. extant? Porzana atra. (Henderson Id.) Small; "entire plumage deep black, with a slight greyish gloss"; iris red; bill black; feet orange. Diomedeidae. Albatrosses. Puffinidae. Shearwaters, thick-billed petrels (Pterodrome, formerly "AEstrelata"), etc. Hydrobatidae. Small petrels. Bulweria is one of the smaller Puffinidæ, with a longish, wedge- shaped tail; nasal tubes fleshy at ends; plumage uniform sooty brown. B. macgillivrayi has the chin and wing-coverts of the same color as the body, and a stout bill. B. bulweri (which occurs in the N. Pacific, and may wander into waters south of the Equator) has a slenderer bill, and the greater wing-coverts and chin are paler than the rest of the plumage; there is also doubtless a difference in the fresh colors of soft parts. Pealea is a gems of small petrels found in Samoa, but may occur elsewhere, such as in the mountains of Tahiti. It has flattened and wide claws, and the first primary is longer than the 3d. The general color above is sooty or brownish black, including neck and breast; upper tail- coverts white, each feather with a faint longitudinal dark streak;