ALCIDJE — THE AUKS — CTCLOERHYNCHUS. 515 



starved ; these were the only birds of this species which he saw. The Eskimos 

 about Kotzebue Sound and Fort Clarence make so much use of the small orange- 

 colored plates at the base of the bill of this bird for ornamenting their water-proof 

 frocks, that it was evident that it must have extensive breeding-places in that 

 vicinity. 



Eggs of this species from St. Paul's Island, in the Behring Sea, collected by Mr. 

 Elliott, are of a pure chalky-white color, and of an oblong oval shape, with rounded 

 ends. They measure 2.10 inches in length by 1.45 in breadth. 



Genus CYCLORRHYNCHUS, Kaui-. 



Plmhris, Temm. Man. Orn. II. 1820, 929 (part). 



Cyclmrhymhus, Kaup. Entw. Eur. Thierw. 1829, 15 (type, Alca psittaada., Pall.). 



Ombria, Escuscholtz, Zool. Atl. pt. iv. 1831, 3 (same type). 



Ciiau. Bill much compressed, the maxilla blunt at the end, and with the eulmen and toinium 

 both decidedly convex ; mandible strongly falcate, both gonys and tomium being greatly curved 

 upward toward the tip, which is very acute ; nasal shield nut extending to the eulmen, and bill 



C. psittacnlus. 



destitute of accessory deciduous appendages. Plumage dull (dusky above and white below), orna- 

 mented only by a single longitudinal postocular series of slender white filamentous feathers. 



The form of the bill in this genus is unique, separating it trenchantly from Simorhynchus, its 

 nearest ally. But one species is known. 



Cyclorrhynchus psittacnlus. 



THE PARROT AUK. 



Alca psittaada, Pall. Spie. Zool. V. 1760, 13, pi: 2, and pi. 5, figs. 4, 5, 6. 



Phaleris psittacula, Temm. Man. II. 1S20, 929. — Couf.s, Key, 1S72, 342 ; Check List, 1S73, no. 



621 ; Elliott's Alaska, 1875, 204. — Ridgw. Norn. N. Am. B. 1881, no. 747. 

 Ombria psittacula, Eschsch. Zool. Atl. IV. 1831, 3, pi. 17. — Cass, in Baud's B. N. Am. 1858, 410. 



— Baikd, Cat. N. Am. B. 1859, no. 725. — Elliot, Illustr. Am. B. I. I860, pL 70. 

 Simorhynchus psittacnlus, Schleo. Mus. P.-I5. IX. 1867, 24. — Coues, Pr. Ac. Nat. Sci. Pliilad. 



186S, 36, fig. 6 (hill) ; 2d Check List, 1S82, no. S58. 



