Se ae 
342 ' ALCIDH, AUKS.—GEN. 322. 
9; wing 54; tarsus 1; bill 3. N. Pacific. The curious bill is used to 
pry open bivalve mollusks (Brandt). Nurr., ii, 5384; Ombria psittacula 
Cass. in Bp., 910; Simorhynchus psittaculus Cours, —~ 
1G. 36 se Bao @, spl (Ole ee) ees PSE AOUIEAS 5 nS, 
322. Genus SIMORHYNCHUS Merrem. 
Orested Auk. Adult in summer: blackish, paler 
and grayish below. A recurved frontal crest of 
12-20 narrow feathers, dark ; a bundle of lengthened — Fie. 222. Parroquet Auk. 
filamentous feathers over and behind each eye, white. Bill red, yellow-tipped, 
with singularly irregular rictus, sides of lower mandible wholly naked, and 
a horny development at the commissural angle. Phaleris cristatella AuD., 
vii, 253, pl. 467; Cass. in Bp., 906 ; Simorhynchus cristatellus Cougs, 1. ¢. 38. 
Fia. 223. Crested Auk: adult in summer. Fic. 224. Crested Auk: immature. 
Fig. 223. In winter, bill dark, without the horny plate: Uria dubia PAu. ; 
Simorhynchus dubius Cours, l. c. 40. Younger birds with a white spot 
under the eye, base of lower mandible feathered, gape straighter, and no 
horny plate at the angle. -Alca tetracula Pau. ; Phaleris tetracula Cass. in 
Bo., 907; Simorhynchus tetraculus Cougs, !. c. 43 ; Exxror, pl. 67. Fig. 224. 
See Branpr, J. c. 224. All the foregoing stages show the crest, but it is 
wanting in very young birds. Length about 9; wing 53; tail 14; tarsus under 
1; bill4. N. Pacific; not observed in U.S. orIsTaTELLUS. 
By, Whiskered Auk. Similar; smaller; two series 
(postocular and maxil- 
if eS lary) of filamentous white 
| feathers on each side of 
4 head; bill smaller, never 
irregular. Very young: 
aN blackish-plumbeous, paler 
pe. below, no crest, bill dark 
e (S. cassint Cougs, l. c. 
Fic. 225. Whiskered Auk: adult. Fic. 226, The same, young. 45 ; Bp., py Chicago 
Acad. i, 324, pl. 31, f. 2; Alca pygmea Gm.?). N. Pacific. Phaleris 
camtschatica Cass. in Bo., 908; Simorhynchus camtschaticus Cours, l. ¢. 
41; Uria mystacea Pati; Mormon superciliosum Licut. CAMTSCHATICUS. 
