70 John Hogg, Esq., on the Classification of Birds. 



Family 1. Podicipidce. From the remarkable feet of the 

 grebes, their want of a tail, and some other characters, I 

 perfectly coincide with the last mentioned author in separat- 

 ing them from the family of Colymbidce. 



Tribe VIII. Sulcirostres. I have bestowed this title upon 

 the present tribe, in order to point out their peculiar hills 

 as well as the grooves or furrows (sulci) that are apparent 

 in them. 



Family I. Mormonidoe. This family has been established by 

 myself for the little auk, puffin, razor-bill, &c., since they prin- 

 cipally differ from the true auks {Alcidce) in their short, but 

 more perfectly developed wings%with which they are able to 

 fly, notwithstanding the statement of Cuvier and others to 

 the contrary. 



Ohs. With respect to the suhtribes, I must here make 

 some explanation, viz., that where one subtribe is intended to 

 embrace more families than those comprised in a single tribe, 

 for example, the subtribe Longipennes may include the 

 Larida3 and Sternidae, as well as the Procellariadae ; and the 

 subtribe Brevipennes, the Podicipidae, Colymbidae, and Mor- 

 monidae, the term suborder might perhaps be more correctly 

 substituted for that of subtribe, and in lieu of standing after 

 be placed before, the tribe ; but this I will leave to the judg- 

 ment of others. And I will only add, that I have preferred, 

 for the sake of a uniform terminology, to name all those sec- 

 tions subtribes, and not some of them " suborders," and 

 others " subtribes." 



Subtribe 6. Imperfectipennes, in consequence of the wings 

 of the true auks {Alcidce) being so imperfect^ as to be useless 

 for the purpose of flying, I have formed this subtribe for 

 them, and for the foreign family of Penguins (Spheniscidce), 

 which is furnished with very similar wings 



Family 2. AlcidcE. Herein are contained the restricted 

 auks ; and I thus station the wingless auk {Alca impennis) 

 the last in my arrangement of the European birds. 



As I have previously m-entioned, that I would begin my 

 general classification of birds by the condor (Sarcoramphus 

 gryphus), and I would terminate it by the smallest species of 

 penguin ; so, in like manner, it will be seen, that I have com- 



