ALCID/E — THE AUKS — ALLE. 



4G3 



15. Lunda. Deciduous nasal shield rapidly increasing in width toward the top, where form- 

 ing an arched and much thickened ridge ; basal outline of the mandil>le convex ; maxil- 

 lary sulci and anterior outline of the nasal shield with the concave sides anterior ; 

 terminal half of maTidible perfectly smooth ; eyelids wiihout horny plates ; a<^lult 

 furnished with elongated, pendent, silky, ornamental supra-auricular tufts. 



Genus ALLE, Lixk. 



Alle, Link, Beschr. Nat.-Sainml. Univ. Rostoc^k, I. 1806, 17 (type, yl. nigricans. Link, ■= AIca alh, 



Linn.). — CouES, BulL Nutt. Orn. Club, IV. Oct. 1879, 244. 

 Mcrgulus, Vieill. Analyse, 1816, 66 (type, Alca idle, Liw.). 



Char. Size small (wing about four and a half inches). Bill very short and thick, the culmen 

 strongly convex, the gonys exceedingly short (less than one third the culmen) and straight ; 

 mandibular rami widely separated, the interval filled l)y a very broad, densely feathered area, 



A. nigricans, summer dress. 



extending nearly to the tip of the bill ; nasal fossa) semicircular, the lower third occupied by the 

 nostril. Head, neck, and upper parts black, the under side of the head and neck white in winter ; 

 lower parts white, and scapulars streaked with white, at all stages. 



The single species of this genus is the well-known Sea Dove, or Dovekie, abundant along the 

 coast of New Ensland in winter, but breedinsr much farther north. 



Alle nigricans. 



THE SEA-DOVE; DOVEKIE. 



Alca alle, Linn. S. N. ed. 10, I. 1758, 131, no. 6 ; ed. 12, L 1766, 211, no. 5. — "Wils. Am. Orn. 



IX. pi. 74, fig. 5. 

 Urin alle. Pall. Zoog. Rosso- As. II. 1826, 369. — Aro. Orn. Biog. V. 1838, 304, pi. 339. 

 Mergulus alle, Vieill. Analyse, 1816, QQ ; Gal. Ois. 1825, 286, pi. 295. — Gould, B. Eur. V. 1837, 



pi. 402. —Cass, in Baird's B. N. Am. 1858, 918. — Bviim, Cat. N. Am. B. 1859, no. 73S. — 



CouES, Pr. Ac. Nat. Sci. Philad. 1868, 54 ; Key, 1872, 343 ; Check List, 1873, no. 626. 

 A' ca Candida, BiiiJNN. Orn. Bor. 1764, 26, no. 107 (albino?). 

 Alca alee, Gmel. S. N. I. 1788, 554. 

 }[ergulus melanoleucus, Lkacii, Syst. Cat. 1S16, 42. 

 Mcrgulus arcticus, Breum, Vog. Deutschl. 1831, 994. 

 Alle nigricans. Link, Beschr. Nat.-Sanind. Univ. Rostock, I. 1806, 17. — Coi'Es, Bull. N'utt. Orn. 



Club, IV. 1879, 244 ; 2d Check List, 1SS2, no. 863. — Kidgw. Noui. N. Am. B. ISSl, no. 752. 



