1883.] FROM "WESTERN AMERICA. 431 



head and throat being rather paler than the body and with a plum- 

 beous rather than a sooty tint. 



As in C. leucorrhoa 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 fe- 

 males. No species of this genus has been previously noticed in these 

 seas, C. melania being from the coast of Mexico. 



138. Majaqueus ^QUiNOCTiALis (Linn.) ; Coues, Pr, Ac. Phil, 

 1864, p. 118 ; Salv. Orn. Misc. i. p. 232. 



$ . Coquimbo, Chili, June 1882. 



139. PuFFiNus GRiSEUs (Gm.) ; Salv. Orn. Misc. i. p. 236. 

 Callao Bay, Peru, August ISSl. 



140. PuFFiNUS CREATOPUS, Coues ; Pr. Ac. Phil. 1864, p. 131 ; 

 Salv. Ibis, 1875, p. 376. 



cj. 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. Phih 

 1866, p. 30. 



6 ? . Coquimbo Bay, Chili, November 1881. 

 6 . Valparaiso, Chili, July 1882. 



143. OssiFRAGA gigantea (Gm.) ; Coues, Pr. Ac. Phil. 1866, 

 p. 32. 



2 . Coquimbo Bay, Chili, November 1881. 



144. OEsTRELATA DEFiLippiANA, Gigl. & Salvad. ; Salv. Orn. 

 Misc. i. p. 255, pi. 33. 



$ . Coast of Chili, December 1881. 



145. OESTRELATA NEGLECTA(Schl.) ; Mus. d. Pays-Bas, vi. Py'o- 

 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 (E. neghcta 

 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, excejjt 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-Feruandez birds is rather lighter-coloured beneath 



29* 



