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Show 1883.] FROM WESTERN AMERICA. 431 head and throat being rather paler than the bodv and with a plumbeous rather than a sooty tint. " As in Gleucorrhoa the wing-coverts are lighter than any part of the wing; but this species is obviously distinct, having a white rump, as is also the case with Mr. Ridgway's C. cryptoleucura. Captain Markham's collection contains two specimens of this species, which I propose to call after him. Both are marked as females. No species of this genus has been previously noticed in these seas, C. melania being from the coast of Mexico. IQP3.8" ^J 0 AQUEUS ^QUINOCTIALIS (Linn.); Coues, Pr. Ac. Phil. 1864, p. 118 ; Salv. Orn. Misc. i. p. 232. 2 • Coquimbo, Chili, June 1882. 139. PUFFINUS GRISEUS (Gm.); Salv. Orn. Misc. i. p. 236. Callao Bay, Peru, August 1881. 140. PUFFINUS CREATOPUS, Coues; Pr. Ac. Phil. 1864, p. 131; Salv. Ibis, 1875, p. 376. 8- Coquimbo Bay, Chili, November 1881. 141. PUFFINUS OBSCURUS (Gm.). Charles I., Galapagos. Not previously noticed in the Galapagos Archipelago. 142. THALASSCECA GLACIALOIDES (Smith); Coues, Pr. Ac. Phil- 1866, p. 30. 8 2 • Coquimbo Bay, Chili, November 1881. 8 • Valparaiso, Chili, July 1882. 143. OSSIFRAGA GIGANTEA (Gm.); Coues, Pr. Ac. Phil. 1866, p. 32. 2 • Coquimbo Bay, Chili, November 1881. 144. GSSTRELATA DEFILIPPIANA, Gigl. & Salvad.; Salv. Orn. Misc. i. p. 255, pl. 33. 2 . Coast of Chili, December 1881. 145. G^STRELATA NEGLECTA (Schl.); Mus. d. Pays-Bas, vi. Pro-cell, p. 10. Juan Fernandez, March 1882. Two specimens in Captain Markham's collection are in all essential particulars so much like one of MacGillivray's examples of CE. neglecta from the Kermadec Is., that I hesitate to separate them. The only differences I can trace are in the coloration of the lower plumage, which, in the Juan-Fernandez examples, is dusky instead of white, and in the inner web of the primaries, except at the tip, being white right up to the shaft of the feather instead of having a dark strip dividing the white portion of the web from the shaft. One of the Juau-Fernandez birds is rather lighter-coloured beneath 29* |
