Razor-Bint AvK. NATATORES. ALCA. 435 
summer plumage, from a specimen in the British Mu- 
seum. 
Length about three feet. Bill black; four inches and a General 
quarter long; the mandibles having transverse oblique cee 
furrows. In front and around the eyes is a large patch gummer 
of white. The rest of the head, the neck, and upper P!u™ase- 
plumage, deep pitch-black. Tips of the secondaries 
white. Greater quills black; the longest not exceeding 
four inches. Under plumage white. Legs having the 
tarsi very short; and the feet blackish-brown. 
In autumn, the cheeks, throat, fore part and sides of the winter 
neck, become white; and this plumage is retained till Pl&™se 
the advance of the following spring. 
RAZOR-BILL AUK. 
Atca Torna, Linn. 
PLATE LX XXIII. 
Alca Torda, Linn. 1. 210. 1.—G@mel. Syst. 1. 551.—Briss, Orn. 6. 892. t. 8. f. 1. 
—Lath Ind. Orn. 2. 793. sp. 5.—Flem. Br. Anim. 1. 130. No. 202. 
Utamania Torda, Leach in Cat. Br. Mus. 42.— Steph. Shaw’s Zool. 13. 27. 
Alca Hoieri, Rati Syn. 119. A. 3.— Will. 243. t. 64. 65. 
Le Pingouin macroptére, Temm. Man. d’Orn. 2. 936.—Lesson’s Man. d’Orn. 
2. 360. 
Tord Alk, Bechst. Naturg. Deut. 4. 711.— Meyer, 'Tasschenb. Deut. 2. 349. 
Razor-bill Auk, or Murre, Penn. Br. Zool. 2. 509. No. 230. pl. 82.—Ed- 
ward, Glean. pl. 358. f. 2.—Lath. Syn. 5. 319.—ld. Sup. 264.—Lewin’s 
Br. Birds, 6. pl. 224.—Mont. Ornith. Dict. and Sup.—Bewick’s Br. Birds, 
ed. 1826, 2. pt. 399.—Flem. Br. Anim. 1. 130. No. 204. 
Common Razor-bill, Shaw’s Zool. 13. 27. 
Alca Pica, Linn. Syst. 1. 210. 2.—Gmel. Syst. 1. 551. 
Utamania Pica, Steph. Shaw’s Zool. 13. 30.—Leach, Cat. Br. Mus. 42, 
Alca minor, Briss 6. 923, t. 8. f. 2. , 
Mergus Bellonii, Utamania, Raii Syn. 119. 2.— Will. 243. t. 64. cee 
Le Petit Pingouin, Buff: Ois. 9. 396. Winter 
Black-billed Auk, Penn. Br. Zool. 2. 511. No. 231.—Arct. Zool. 2. 426 — | plumage. 
Lath. Syn. 5. 320. 6.—Mont. Orn. Dict. and Sup.—Bewick’s Br. Birds, 
ed. 1826, 2. pt. 402. 
White-throated Razor-bill, Steph. Shaw’s Zool. 13. 30. 
Provincrat—Auk, Murre, Marrot, Gurfel. 
In this species the wings are sufficiently developed for the 
purpose of flight, being nearly of the same proportionate 
(9) 
Ee 
