ALCIDH, AUKS.—GEN. 327, 328. 345 
outer claw smooth; tail contained less than 3 times in length of wing. In summer, 
black, with white on wings or head; in winter, largely white; bill black, feet red. 
Length 12-15; wing 53-73; tarsus 1}-11; re 
pill 13-12. 
Black Guillemot. Sea Pigeon. A ©) 
large continuous white area on both 
upper and under surface of the wing, 
(rarely imperfect or wanting); head and 
neck with greenish gloss; tail feathers 
123 wing 54-64 5 bill rather acute. FIG. 233. Black Guillemot. 
N. Atlantic, very abundant, S. in winter to New Jersey. Eggs laid in 
fissures of rock, 2 (3?) in number, 23X1% in size, nearly elliptical in 
= shape, greenish-white, variously blotched 
with brown and purplish. Arctic Seas; 
© rare or casual in the N. Pacific? Nurr., 
ieee 523; AUD., vii, 272, pl. 474; Cass. 
a in Bp., 911. Couns, J. c. 68; and op. 
Aes loOlennoste dea pet a ae CRY EES 
Pigeon Guillemot. A large white area 
Fic. 234. Pigeon Guillemot. on upper surface of wings only, partly 
divided by a black line; head and neck with opaque ashy shade; tail 
feathers 14 (always?) ; bill rather obtuse ; size rather greater, wing about 7. 
N. Pacific. Cass. in Bp., 912; Cougs, l. c. 72. 1) ee = JOOLUMBAG 
Sooty Guillemot. No white on 
the wings, but usually whitish _ 
patches on the head. Larger; ») 
wing nearly 8; bill 13-13. North 
Pacific. Cass. in Bp.,.913, pl. 97; 
@oOuUrs./-wGto- . <.° «. CARBO. 
328. Genus LOMVIA Brandt. She 
*.* Tarsi scutellate in front, much Fic. 235. Sooty Guillemot. 
shorter than middle toe without claw; bill with decurved commissure, much longer 
than tarsus, its end, and the outer claw, grooved; nostrils feathered ; tail gradu- 
ated, contained more than 3 times in the length of wing. Size and coloration 
almost exactly as described under Utama- 
nia, \ut no white line from bill to eye. 
Common Guillemot, or Murre. 
Depth of bill at nostrils not nearly $ 
the length of culmen; tomia of upper 
mandible at base feathered, not notice- 
ably dilated, nor brightly colored. In 
Fig. 236. Common Guillemot. some cases, edges of eyelids, and line 
behind eye, white. N. Atlantic, Arctic and Pacific coasts, S. to New Jersey 
and California; breeding in myriads on rocky islands. Egg single, on bare 
ledges ; 3-34 long, by 1g-24 broad; the ground color varying from white 
KEY TO N. A. BIRDS. 44 
