512 



THE DIVIXU r.IItns — PYGOPODES. 



which are a rictal phito nml n broail, ciini-<l, |>f»steri(tily truncate shield covering' the lateral huse 

 of the maiuliblu. Forehead ornanientttl l>y an upright recurved tuft of slender feathers, the tips of 



S. crittcUeUut. 



which overhang the hill ; head faHln-r onianuntcd hy a postocular series of slender white 

 filamentous feathers. Pluniai^'c i>Iain — uniform du>ky above, ^'ray liilow. 

 A single species (S. criskitillns) lx.dongi< to this genus, sis here rcstrictetl. 



Simorhjmchns cristatellus. 



THE CRESTED AUK. 



Alca crhtatelln, Pali,. Si>ic. Z.wl. V. \lf>'J, 20, pi. 3 an.l pi. ;'., figs. 7, 8, 0. — Omkl. S. N. 1. ii. 



1788. :>:>% no. 7. 

 Simdrhiniehuscriditlt'lhi:^, ""SXr.v.v.r.yi," \>i^\\v.f'<tm\tt. Kciid. XLII. IS.Ifi, 774. — CorRs, Pr. Ac. 



Nat. Sl'I. Philad. IStiS, 37 ; K.>y, lS7i M-l : C'li.-.k List. 1873, no. {\-2i ■ ed. 2, 1S82, no. 859 ; 



Elliott's Alaska, 1875, 20t;. - l{il>i:w. Noni. X. Am. 15. ISSl, no. 748. 

 Phalcn'.i cris/atc/lii.i, Hrv.vur.sri, (ifu. Zi>ol. XIII. 1S25. 47, pi. 5. — C.vs.s. in liaird's 15. X. Am. 



1858, one. — I5aiui>, Cat. X. Am. 15. l^r.iK no. 71!". 

 Phalcris supcrciliii/ii, Arn. Orn. Biog. pi. 402; 15. Ar VII. 1844, pi. 437 (not Mormon supeiriliosd, 



LlcMT., = J/cti p!/(jmira, TJm. ). 

 Uria dubia, Pai.l. Zoog. Kos.so-.\s. II. lS-2»5, 371, pi. 87 (= young). 

 Sininrhijnchits (bibiu.i, CofEs, Pr. Ac. Xat. S.i. Pliila.l. 1868, 40. 

 Akatclniculn, Pai.l. Spic. Z..ol. V. 17t;i», 23, pi. 4, and \A. 5, figs. 10, 11, 12. ~G.\ir,i,. S. X.I. ii. 



1788, 552, no. 8. 

 Phnlcris telmmla, Ca.ss. in Buiril's B. X. Am. 1S59, W7. — P.AiiiD, Cat. X. Am. U. 1859, no. 720. 

 Simorhijiuhus tctrnculus, CofEs, Pr. Ac Xat. S<i. Philad. 18(18, 43, fig. 9 ; Key, 1S72, 342. 



Hab. Coasts and islan<ls of the North Pacific, from Kadiak and Uimlashka through the 

 Aleutian chain to Kamt.'schatka and Xorthcni Jajian ; north to Pryhilof Islands. 



Sp. Char. Adult. brc&Unfi-iIn-'is: B,isal pirtion of the bill covered with complicated super- 

 nunierarj"^ pieces, the most conspicuous of whicli is a detached semicircular concave jdate situated 

 just above the rictus. Upper parts dii.sky Mackish ; lower ]iarts uniform smoky gray, shading 

 insensibly into the blackish of the npiK-r parts. On the forehead a curled crest of narrow dusky 

 brown feathers, curved forwanl in the greater jiart of a circle ; behind the eye, extending thenct? 

 back over the auriculars, a streak of narrow acicular white feathers. Pill bright orange-red, the 

 end pale horn-color ; iris white ; legs and feet du!«ky in the dried skin. Adnlf, in mxhr (=^ Aim 

 tetracula, Pallas) : Similar in plumage, even to the crp!«t and white auricular filaments ; but bill 

 very different, owing to the loss of the supernumerary Uxsid pieces, being much sntaller, smooth, 

 and destitute of the rictal shield, the hroad ex]>ansion of the mandibular rami and nastd shield ; 



