ALCID.E — THE AUKS — ALLE. 



463 



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 mandible convex ; maxil- 

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

 terminal half of mandible perfectly smooth ; eyelids without horny plates ; adult 

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



Genus ALLE, Link. 



Alle, Link, Beschr. Nat.-Samml. Uiiiv. Rostock, I. 1S06, 17 (type, ^. nigricans, LiSK, = Alca alle, 



Li.N-N.).— CoiTES, Bull. Nutt. Orn. Club, IV. Oct. 1879, 244. 

 Mergulus, Vieill. Analyse, 1816, 66 (type, Alca alle, Lixx. ). 



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 liy a very broad, densely feathered area. 



A. nif/ricans, summer dress. 



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

 nostril. Head, neck, and upper parts black, the under side of tlie 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 England in winter, but breeding much fiirther north. 



Alle nigricans. 

 THE SEA-DOVE; DOVEKIE. 



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



IX. pi. 74, fig. 5. 

 Uria alle. Pall. Zoog. Rosso- As. IL 1826, 369. — Ai'D. Orn. Biog. V. 1838, 304, pi. 339. 

 Mergulus alle, Vieill. Analyse, 1816, 66 ; Gal. Ois. 1825, 236, pi. 295. — Gould, B. Eur. V. 1837, 



pi. 402. —Cass, in Baird's B. N. Am. 1858, 918. — B.uiin, Cat. N. Am. B. 1859, no. 738. — 



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

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

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

 Mergulus mclanolrucus, Leach, Syst. Cat. 1816, 42. 

 Mergulus arcticus, Breiim, Vog. Deutschl. 1831, 994. 

 Alle nigricans, LiXK, Beschr. Nat.-Sammb Univ. Rostock, I. 1806, 17. — CouEs, Bull. Nutt. Orn. 



Club, IV. 1879, 244 ; 2d Check List, 1882, no. 863. — Ridgw. Nom. X. Am. B. 1881, no. 752. 



