ALCID^ — THE AUKS — CICERONIA. 



507 



tory, and on Shoal-water Bay, In regard to its breeding-habits and its other specific 

 peculiarities, we have no information. Dr. Suckley only states in regard to it that 

 it is found in sununer at Puget Sound j while Br. Cooper presumes that it has about 

 the same range as the Bracliyramplius viarmoratits, and so far as he has observed 

 has similar habits. It is said to be common at Hakodadi in October. 



Genus CICERONIA, Reichenbach. 



Ciccronia, Keiciienb. Syst. Avium, 1852, p. iii (tj'pe, Phalcris microceros, Bkandt, = Uria jmsilla, 

 Pall.). 



Ciceronia pusilla, 



THE KNOB-BILLED AUK; LEAST ATJK. 



Uria pusilla, Pall. Zoog. Rosso-As. II. 1826, 373, pi. 70 (excl. syn. ). 



Phalcris 2}usilla, Cass. Pr. Ac. Nat. Sci. PliiLul. 1862, 324; in Baird's B. N. Am. 1858, 909.— 



Baiud, Cat. N. Am. B. 1859, no. 723. 

 Simorhynchus pusillus, Coues, Pr. Ac. Nat. Sci. Pliilad. 1868, 48, fig. 12, figs. 227, 228 ; Key, 1872, 



343 ; Check List, 1873, no. 624 ; ed. 2, 1882, no. 861 ; Elliott's Alaska, 1875, 208. 

 Ciceronia pusilla, Rioaw. Nom. N. Am. B. 1881, no. 750. 



Phalcris corniculata, EsCHSCH. Zool. Atl. IV. 1831, 4, pi. 16 (= summer adult). 

 Phalcris microceros, Brandt, Bull. Ac. St. Petersb. 11. 1837, 346 (= summer adult). — Cass, in 



Baird's B. N. Am. 1858, 908.— Baikd, Cat. N. Am. B. 1859, no. 722. 

 Simorhynchus microceros, Coues, Pr. Pliilad. Acad. 1868, 46, fig. 11. 



Phalcris pygmxa, Brandt, Bull. Ac. St. Petersb. II. 1837, 347 (not Aha lyygmma, Gmel. 1788). 

 Phalcris nodirostra, Bonap. Comp. List, 1838, 66 (= summer adult). — AuD. Orn. Biog. V. 1839, 



101, pi. 402 ; B. Am. VII. 1844, pi. 468. 



Hab. Coasts and islands of the North Pacific, south to Japan and Sitka, north to the Prybilof 

 Group. 



Sp. Char. Adult, breeding-jdumagc : Bill very short, the depth and width through the base 

 about equal to the length of the culuien, which is decidedly arched ; gonys slightly convex ; top 

 of the cere furnished with a small semicircular compressed tubercle. Upper parts almost wholly 

 deep slate-black, mclining to glossy black in some specimens ; inner scapulars usually white, form- 





Summer adult. 





Winter adidt. 



ing more or less of a longitudinal patch on each side of the back ; inner greater coverts and secon- 

 daries also usually tipped with wliite. Forehead and lores more or less conspicuously ornamented 

 with delicate acuminate white feathers, a few of wliicli, narrower and more thread-like, extend 

 backward in a narrow streak from the rictus across the cheeks, while a more conspicuous line of 



