ALCID.K — THK AUKS — BRACHYRAMPHUS. 499 



A. Tarsus much shorter than the middle toe without its claw. 



1. B. marmoratus. Wing, 5.00 inches; culmen, .6O-.70 ; depth of bill at anterior end of 

 nostril, .24 ; width at same point, .1"> ; tarsus, .To ; middle toe, .92-1.00. Summer plu- 

 mage: Dusky above, barred with rusty ; below, mixed white ami fuliginous. IVintt r plu- 

 mage: Above, dusky, interrupted by a white nuchal collar ; feathers of hark, etc., tipped 

 with plumbeous. Entire lower parts white. Huh, Pacific coast, south to Santa Cruz, Gal. 

 2. B. Kittlitzi. Wing, 5.10-5.80 inches ; culmen, .40-. 45 ; depth of bill at anterior end of 

 nostril, .2d-. 22 ; width at same point, .15 ; tarsus, .60-. 65 ; middle toe, .S5-.95. Summer 

 plumage: Above, plumbeous, with indistinct narrow bars of black and very irregular 

 (mostly longitudinal) spots of creamy hull'; lower parts chiefly white, the jugulum and 

 entire sides strongly overlaid by creamy buff, and heavily, hut irregularly, barred and 

 spotted with blackish; other lower pails (excepl anal region ami crissum) more faintly 

 marked with bars (mostly crescentic) of grayish dusky. Winter plumage : Above, plum- 

 beous, the back and rump indistinctly and narrowly barred with white; entire side of 

 head (including whole of lores and superciliary region), narrow but distinct nuchal collar, 

 and entire lower parts immaculate pure white ; sides of breast crossed by a broad band of 

 grayish slate, narrowing toward middle of jugulum. Hill black ; iris brown ; feet light 

 brown in dried skin (livid purplish gray in lit'.?). Hab. From Northern Japan and 

 Kamtschatka to Unalashka. 

 [3? B. brevirostris. 1 Wing, 5.25 inches; culmen, .50; tarsus, .50. Adult, summer pht- 

 mage: Above, grayish brown, the lead and hark spotted with white ; below, white, waved 

 and spotted with brown ; hill blaok ; feet yellow, the webs and claws brown. Huh. San 

 111 as, W. Mexico.] 



15. Tarsus equal to the middle to.-, without claw. 



4. B. hypoleucus. Wing, 4.50-5.25; culmen, .70- so ; tarsus, .90-.95 ; middle toe, .85. 



Lining of wings white ; above, plain dark slaty ; below, wholly pure white. Hab. San 

 Diego to Cape St. Lucas. 



5. B. Craverii. Wing, 4.60; culmen, .78-.80 ; tarsus, .88-90 ; middle toe, .80-. 88. Lining 



of wings smoky gray or slaty. Otherwise similar to B. hypoleucus. flab. Lower Cali- 

 fornia. 



Erachyramphus marmoratus. 



THE MARBLED GUILLEMOT. 



Colymbus marmoratus, Gmel. S. X. L ii. 1788, 583, no. 12. 



Brachyramphus (Ajiuimjiinu) nwnnoratiu, Brandt, Bull. Ac, St. Petersb. II. 1837, 346. 



Brachyrliamphus marmoratus, Gray, Gen. B. III. 1849, 044. — Cass, in Baird's B. X. Am. 1858, 



915. — Baird, Cat. X. Am. B. 1859, no. 732. — Coues, l'r. Ac. Nat. Si. Philad. 1S68, 61; 



Key, 1872,344; Check List, 1873, no. 629; ed. 2, 1S82, wo. 866. — Kidgw. Norn. X. Am. B. 



1881, no. 755. 

 Cepphus perdix, Pall. Zoog. Eosso-As. II. 1826, 351, pi. 80. 

 Brachyramphus Wrangeli, Brandt, Bull. Ac. St. Petersb. II. 1S37, 344. —Cass, in Baird's B. X. 



Am. 1858, 917. — Baird, Cat. X. Am. B. 1859, no. 733. — Coues, Pr. Ac. Nat. Sci. Philad. 



1868, 63. 

 Uria Toumsendii, Am. Dm. Biog. V. 1839, 251, pi. 430; B. Am. oct. ed. VII. 1844, pi. 475. 



Hab. Coasts and islands of the North Pacific, south, on the American side, to San Diego, Cal. ; 

 breeds at least as far south as Vancouver's Island. 



Sp. Char. Adult, full breeding-plumage: Above, dusky, the back, scapulars, rump, and upper 

 tail-coverts barred with rusty, the tips of the feathers being of this color. Lower parts fuliginous, 

 more or less mixed with white, the underlying portion of the feathers being of the latter color ; 

 the lower parts never uniform fuliginous, but usually with this color largely predominating. 



1 Brachtrhamphus brevirostris. — Short-billed Guillemot. 



Uria brevirostris, Vig. Zool. Jour. IV. 1S2S, 357; Zool. Beechey's Voy. 1839, Orn. p. 32 (San 

 Bias). (This is possibly the same as /■'. Kittlitzi.) 



