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Show 196 MR. H. SAUNDERS ON THE LARIN.E. [Feb. 5, 35. LARUS SERRANUS, Tsch. (Fig. 9.) Larus serranus, Tschudi, Wiegm. Arch. 1844, pt. i. p. 314; Fauna Peruana, Aves, p. 307 (1845-6) ; Scl. & Salv. P. Z. S. 1871, p. 577. Chroicocephalus personatus (Natt.), Bruch, J. f.Orn. 18o3,p. 104, et 1855, p. 289. Xema cirrhocephalum, Peale ; Cassin, U.S. Expl. Exp. Orn. p. 381 (1858). Larus glaucotis, Cassin, /. c. p. 381 (1858). Gavia serrana, Bp. Rev. Zool. 1855, p. 19. Larus personatus, Natt.; Schl. M . Pays-Bas, Lari, p. 35 (1863). Gavia personata, Blasius, J. f. Orn. 1865, p. 372. Larus bonapartii, Scl. & Salv. P. Z. S. 1868, p. 178. Hab. This fine black-hooded species is found throughout the Cordillera and the Andes of Northern Chili, Bolivia, Peru, and as far north as Ecuador, whence Mr. Salvin has a specimen. It breeds Fig. 9. Three outer primaries of L. serranus, ad. in colonies on the shores of mountain-lakes, and is well known to the Quichua-speaking Indians under the name of " Quiulla," doubtless an imitation of its cry. During the bad weather it descends to the west coast. The egss and nestlings are as yet unknown to me. |