782 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Cerorhinca occidentalis Bonaparte, Ann. Lyc. Nat. Hist. N. Y., ii, 1828, 428 
(‘western coast of America”; cites “‘Am. Orn., iv, pl. ”),—LEsson, Traité 
d’ Orn., 1831, 641.—Nurratt, Man. Orn. U. 8. and Can., Water Birds, 1834, 
538. 
Ceratorrhina occidentalis AUDUBON, Birds Am., fol. ed., pl. 402, fig. 5. 
Ceratorhyncha occidentalis AuDUBON, Orn. Biog., v, 1839, 104.—BonaparTE, 
Geog. and Comp. List. 1838, 66.—Rmeway, Cat. Aquatic and Fish-eating 
Birds, 1883, 40. 
Uria occidentalis AUDUBON, Synopsis, 1839, 349; Birds Am., 8vo. ed., vii, 1844, 
264, pl. 471. 
Clerorhina] occidentalis Gray, Gen. Birds, ili, 1848, 639. 
Chimerina cornuta Escuscnoitz, Zool. Atlas, Heft iii, 1828, 2, pl. 12.—Burzav, 
Bull. Soc. Zool. France, iv, 1879, 43, pl. 4.— Dysowsxt, Orn. Centralbl., 
1882, 28 (Kamchatka). 
Cerorhina orientalis [lapsus for occidentalis?] Branpt, Bull. Ac. St. Pétersb., 
ii, 1837, 348. 
[?] Alca torda (not of Linneus) Temmincx and ScuurceL, Fauna Japonica, 
Aves, 1842, 125. 
Cerorhina suckleyi Cassin, in Baird, Rep. Pacific R. R. Surv., ix, 1858, 906 (Fort 
Steilacoom, Washington; coll. U. S. Nat. Mus.; = adult without knob on 
bill).—Barrp, Cat. N. Am. Birds, 1859, no. 718.—Coorer and Sucxury, 
Rep. Pacific R. R. Surv., xii, pt. ii, 1860, 284 (Fort Steilacoom; crit.). 
Sagmatorrhina suckleyi Couns, Proc. Ac. Nat. Sci. Phila., 1868, 32, figs. 4, 5 
(monogr.). 
Genus FRATERCULA Brisson. 
Fratercula Brisson, Orn., vi, 1760, 81. (Type, Alca arctica Linnzeus.) 
Mormon InutcEr, Prodr. Orn., 1811, 283. (Type, Alca arctica Linneus.) 
Larva Virw.ot, Analyse, 1816, 67. (Type, Macareux = Alea arctica Linnzus.) 
Puffinus® (not of Brisson) “Will[ughby]’’ S. D. W., Analyst, iii, no. xiv, Jan., 
1836, 211. (Type, P. flavirostris 8. D. W. = Alca arctica Linneus.) 
Large Fraterculine (wing 153-188 mm.) with the deciduous 
supra-nasal saddle diminishing in width toward culmen, its an- 
terior outline convex; basal lamina of bill of equal width through- 
out or slightly wider above than below; maxillary grooves convex 
anteriorly; eyelids with horny appendages; head without orna- 
mental plumes, and under parts white. 
Bill extremely deep and compressed, its depth at base much more 
than twice its width at same point and greater than its length from 
tictus; culmen arched (sometimes from extreme base), much longer 
than middle toe without claw; gonys convex proximally, straight 
or sometimes even slightly concave distally, muuch Jonger than tar- 
sus; tomia straight to very near tip, that of maxilla decurved ter- 
minally (the tip of maxilla slightly but distinctly uncinate), that 
of mandible abruptly deflected terminally; middle portion of sides 
of both maxilla and mandible obliquely grooved and ridged, the ° 
grooves and ridges slightly convex distally (anteriorly) ; nasal cuirass 
diminishing rapidly in width toward culmen, where surmounted 
@ Also Palmer, Analyst, iv, 1836, 97. (Latinized from Puffin.) 
