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Show 570 MESSRS. SCLATER AND SALVIN [JllllC 20, Coues, Proc. Ac. Phil. 1862, p. 544, et Ibis, 1864, p. 390; Salvin, Ibis, 1866, p. 199. Sterna chloripoda, Le'otaud, Ois. de Trin. p. 537 ! Hab. Lake of Duenas, Guatemala (Salvin); coast of Brazil (Mus. S.-G.). Salvin obtained one specimen of this Tern in winter plumage on the Lake of Duenas in October 1862, which has been examined by Dr. Coues. But it seems to go occasionally much further south, as Salvin and Godman's collection contains a skin, apparently of this species, taken at sea 300 miles off Pernambuco. 5. STERNA TRUDEAUII*. Sterna trudeauii, Aud. Orn. Biogr. v. p. 125; Baird, B. N. A. p. 861; Coues, Pr. Ac. Sc. Phil. 1862, p. 542; Schlegel, Mus. des P.-B. Sterna, p. 29. Sterna fvobeeni, Ph. et Landb. Wiegm. Arch. 1863, p. 125, et Cat. Av. Chil. p. 49. Hab. Coast of Brazil (Rogers) ; coast of Chili (Leybold). Mr. Rogers has lately sent a series of skins of a Tern from the coast of Southern Brazil, which appear to answer very fairly to S. trudeauii of Audubon, as redescribed by Dr. Coues from Audubon's type. Prof. Schlegel likewise recognizes the species in skins coming from the same locality. Like Audubon's and Prof. Schlegel's specimens, Mr. Rogers's eight skins are all white-headed, with a black transocular blotch. This would give one the idea of a Tern in winter dress; but we are inclined to agree with Prof. Schlegel that this species never acquires a black head. It is very possjble, we think, that there may have been some error in Audubon's locality for his single specimen of this bird (coast of New Jersey), as we know that a similar mistake has been made by him in other cases. 6. STERNA CASSINII. Sterna antarctica, Peale (nee Less., nee Forst.) ; Ph. et Landb. Cat. Av. Chil. p. 49. Sterna meridionalis, Cassin, Zool. U. S. Expl. Exp. p. 38h (nee Brehm). Sterna cassinii, Sclater, P. Z. S. 1860, p. 391; Pelzeln, Orn. Novara-Reise, p. 153; Abbott, Ibis, 1861, p. 166. Sterna wilsoni, Burm. Syst. Ueb. iii. p. 451. Sterna hirundo, Max. Beitr. iv. p. 865. Hab. Falklands (Pack, Abbott) ; coast of Brazil, Sta. Catherina (Rogers) ; coast of Chili, up to Valdivia (Ph. et Landb.). * There is a beautiful adult specimen of this species in the Museum at Munich, which has recently been examined by Salvin. It was sent from Chili by Herr Leybold of Valparaiso. This specimen justifies Prof. Schlegel's surmise respecting the colour of the head of the adult bird of this Tern. The whole head is pure white ; a dark transocular line traversing each side of the head, the rest of the body, except the rump, which is white, is light grey. The bill is black. the base being yellowish and the tip yellow. Feet yellow. |