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Show 1880.] COLLECTED BY LORD LINDSAY'S EXPEDITION. 163 matters worse, most of the birds collected there were thrown overboard as lumbering the decks in some heavy weather on the night after the visit; and it is perhaps owing to this that no examples are in the collection of QHstrelata arminjoniana and CE. trinitatis obtained by the ' Magenta's' naturalists. 1. FREGATA AQUILA (Linn.) Frigate-bird, Two specimens, nos. 22 and 23, both females in immature plumage, passing into the adult stage. As this plumage is rarely met with and is little known, it is as well to describe it. The wings, back, and tail are black, with a bar of old brown light-edged feathers along the upper wing-coverts ; belly white ; flanks and under wing-coverts black; shoulders rusty black passing into chestnut, which pervades the throat; neck, nape, and crown of head white slightly tinged with rust; bill horn-white. " Off island of Trinidad, South Atlantic, Aug. 20, lat. 20° 23' S., long. 29° 43' W . Temperature of air 77° Fahr. and of water 71°. Large numbers seen ; some deep black with scarlet pouch under the throat. Found them sitting on the island," 2. SULA PISCATOR (Linn.). No. 24, fully adult. Island of Trinidad, same date as above. " These also were sitting." 3. PHALACROCORAX CAPENSIS (Sparrm.). No. 76, female immature. Simons Bay, Cape of Good Hope, Oct. 2. No. 76a, adult. Same time and place. 4, PHAETHON FLAVIROSTRIS, Brandt. No. 100, female, nearly adult. " Shot hovering round masts," Oct. 29, lat. 23° S., long. 59° 18' W . 5. GYGIS CANDIDA (Gm.). No. 28, female. Island of Trinidad, Aug. 21. "Breeding. Iris black." There is a fine illustration of this beautiful species in Gould's 'Birds of Australia,' vii. pl. 30. 6. STERNA MACRURA, Naum. Arctic Tern. No. 95, male. Oct. 23, lat. 32° S., long. 57° 18' E. " Flew on board in the night, commencement of S.E. monsoon." This specimen is an adult with full black head, excepting on the forehead, where the feathers are white, as usual in autumn. It belongs certainly to this species, which I have also had on one occasion from the Cape of Good Hope; but this is yet more south and east for its •ranee. It might have been expected that S. virgata or S. vittata, both inhabitants of the islands of the Southern Ocean, would have |