ALCID.E — THP] AUKS — PLAUTUS. 



467 



Flautus impennis. 



THE GREAT AUK. 



Alca impennis, LlXN. S. N. cd. 10, 1758, 130, no. 2 ; cd. 12, I. 1706, 210, nn. 2. — Ai'ii. Oiii. liinj;. 



IV. 1838, 316 ; 15. Am. pi. 341 ; oct. od. VII. \<l. 465. — C.\s,s. in IJaiids 15. N. Am. IS.OS, 900. 



— I5AII1D, Cat. N. Am. 15. 1859, no. 710. — fin-i:s, I'r, Ac. Nat. Sci. I'liilml. lS(iS, 14 ; Key, 



1872, 339 ; Check List, 1873, no. 615 ; ed. 2, 1882, no. 878. — liUKiW, Norn. N. Am. 15. 1881, 



no. 741. 

 Plautus impennis, Steenstii. Vid. Med. Nat. For. Kjlib. 185,5, 114. 

 Alcaborealis, Fousr. Synop. Cat. Drit. 15. 1817, 29. 



Hab. Believed to be now extinct. Formerly (previous to 1844) inli,al)ite(l the islnnds of the 

 North Atlantic, south to the coast of Xew Kiij^dund (Xahimt and islands in Boston Bay); probably 



did not occur north of the Arctic circle (Woi.lev). 



Ac. St. 



mall, not 

 jssed, its 

 umissure 

 maxilla 

 inaudible 

 ;red, the 

 the tarsi 



extinct, 



/'. im/ii'tiiii/i, siniimi'r nihill. 



Sp. Chab. Adult, in simmer: Head, neck, and upper parts, blackish, the throat and sides of 

 the head and neck inclining to a clear snuff-brown shade ; lower parts, a large oval space covering 

 the greater part of the loral region, and the tips of the secondaries, white ; the white of the juguluni 

 extending upwanl in a point into the snulf-brown of tlie middle portion of the throat. " Bill 

 black, with the grooves between the transverse ridges white ; iris hazel ; feet and claws black " 

 (Acdcbon). 



