ALCIDH, AUKS.—GEN. 820, 321. 341 
pl. 66. See Branpt, 7. c. 244). Length 15-16; wing 73-8; tail 2; 
tarsus 14; bill 24, nearly 2 deep. N. Pacific, abundant; S. to Cala. in 
winter; rare or casual on the 
Atlantic (Maine, Aud.). Mor- 
mon cirrhatus Nutt., ii, 539; 
AUwD., vii, 234, pl. 462; Cass. 
in Bp., 902... . CIRRHATA. 
320. Genus CERATORHINA 
Bonaparte. 
Horn-billed Auk. Glossy 
blackish, below  ashy-gray, 
breast and belly white. Adult 
with two series of stiffish lan- 
ceolate white feathers on each Fic. 217. Undeveloped bill of very young Tufted Puffin. 
side of the head, and a stout upright horn at base of culmen; immature 
birds without these lateral crests, and with soft membrane, more or less 
bulging, in place of the horn; some specimens ( ¢ ?) in perfect plumage 
have no trace of a horn (C. suckleyi Cass. in Bp., 906; Sagmatorrhina 
suckleyi Cougs, l. c. 32; see Exxior, Introd. No. 102, with figs.; Branprt, 
am 2s 
~ 
Saree 
FIGS. 218-21. Various stages of the bill of Horn-billed Auk. 
1. c. 239. Figs. 218-21 show several conditions). Length 154; wing 74; 
tail 24; tarsus 14; bill 14, including horn ; nostril to top of horn sometimes 
#. Pacific Coast to Cala.; breeds S. to the Farallones. Uria occidentalis 
Aup., vii, 264, pl. 471; Nurr., ii, 538; Cerorhina monocerata Cass. in 
Bo., 905; Ceratorhyncha monocerata Cours, |. c. 28. . . MONOCERATA. 
321. Genus PHALERIS Temminck. 
Parroquet Auk. Bill smooth; upper mandible oval, under falcate, rictus 
recurved. Blackish, below paler, gray, white, or varied; adult with a 
series of filamentous white feathers behind each eye; bill red, yellow-tipped. 
