ALUIDyK — THE AUKS - CEPrilUS. 



4U7 



Coniparativo proportions. 

 Li'iigtli of thi! bill to tliv nostrils, 

 Lnigth of wing, 

 Lriigth of tarsus 

 Length of nii'ldl i too, with claw, 

 Length of the oiaw. 

 Length of the rectiices, 

 (Pai.las, 1. 0., triinslation.) 



According to Von Sclirenck ("lleis. Anuirl." I. 18(i0, p. 497), there is some viiriation in the 

 anidimt of the white on the head, especially around the base of tiu! bill, where in some specimens 

 there is scarcely any trace whatever of this color. The single e.\aniple in the National Museum 

 collection (a head from Japan, collected by Dr. W. Stimpsoii) agrees exactly with Pallas's descrip- 

 tiim, as above, in having the feathers all round the base of the bill distinctly white. The measure- 

 ments of this specimen are as foUows ; Culmen, 1.70 ; commissure, 2.10 ; gonys, .80 ; side of 

 mandilile to malar apex, l.Tio ; depth at base, .50 ; width, .38. This hea<l is of a dull grayish-fuligi- 

 nous, darker on the pileum ami lower i)art of neck, and becoming dull white at the base of the bill 

 nil round), as well as around the eyes, and thence backward, as an ill-defmed streak, along the 

 upper edge of the auriculai's. The muter side of the head, as well as the greater e.xtent of the 

 lateral jiortions, is dull smoky grayish, this color fading rather gradually into the white, which is 

 abruptly detin(-d only above the eye?, where the dusky color of the crown forms u marked contrast. 



I can find no mention of tho livinjjr presoncc of tliis species either on any por- 

 tion of the American coa.st or in the Ak'iitian Lshinds ; nor is there any evidence 

 that it lias a chtim to be retained in the avi-fauna of Nortli America. Its habits — 

 in regard to which I have no notes — are i)robably nearly identical with tho.se of 

 C. (jrylle and ('. coliuiihn. This bird is not uncommon in the summer in Yezo, Japan 

 (Swiuhoe, " Ibis," 1875). 



Cepphus Motzfeldi. 



HOTZFELD'S OTJILLEUOT. 



Uria Motzfeldi, Brxickkv, Isis, Aug. 1824, 889. 



Ccpphux Molzfehli, Stk.ix. Pr. U. S. Nat. Alas. 1S84. 



Uria uniaihir, Yxw.v., Isis, Sept. 1824, 981. — Brtr.HM, Isis, 1826, 988; Ilnndb. Viig. Dcutschl. 



1831, 985. — Sfni,E(;. Kcv. Crit. 1844, 106. — Br. Coaipt. Hcnd. XLII. 1856, 774 ; Cat. Parzad. 



1856, 12. 

 Grijllf, cnrho, Hi>. Cat. Met. Pec. Ktir. 1842, 82 (not of Palt,. 1826). 

 " Uria carho (Brit. Mas. ex Iceland)," Ni;WT. Ibis, 1865, 518 (part). 

 Akagrylk, Sculeo. Mas. P.-H. Urinat. 1867, 20 (part). 

 l/riagryfle, Kitml. Ball. U. S. Nat. Mus. No. 15, p. 104 (part). 



Had. High North Atlantic (west shores of Cumberland Sound, Greenland, and Iceland). 



Sp. Char. Similar to 0. carlo, but without any white or li;,dit grayish about the head. Adult .■ 

 Entire plumage uniform sooty black or dark sooty brown, the abdomen somewhat more grayish. 

 " Bill black, very compressed, with very ]irominent gonydeal jirotubcrance, bent tip, and feathered 

 ns far as above the nostrils" (Benrkion, I. c, translation). Total length, 16 inches lines (Ham- 

 burg measure) ; culmen, 1 inch 9 lines ; bill from angle of mouth, 2 inches 3 lines ; from nostril, 

 1 inch ; tarsus, 1 inch (i lines. Feet yellowish brown (in dried .skin), the webs whitish. 



This bird, which evidently is a distinct, but little known, species, was first described by 

 Benicken from a specimen received by him in 1820 from Greenland. A month afterward the same 

 specimen was re-ilescribed by Faber as Uria unicnlor, under the supposition that it had not yet 

 received a name. To his description he adds the information that the owner of the bird-rookery on 

 Draugoe, Iceland, had occasionally observed a pair of uniformly dusky Guillemots breeding on the 

 rocks at that place. A specimen similar to Benicken's type was received at the Leyden Museum 

 from Greenland, and is mentioned by Schlegel in his "Revue critique," as cited above. A third 



VOL. ir. — G3 



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