556 CLASS AVES. 



entire coasts of the nortJi, and builds underground. 

 We see it also sometimes in winter. 



The genus 



Penguins, Alca, Lin. 



Is known by its very compressed bill, elevated verti- 

 cally, sharp-edged above, generally furrowed cross- 

 wise, and by its feet altogether palmated, and with- 

 out a thumb, like those of the guillemot. All these 

 birds inhabit the North Sea. 



They may be subdivided into two sub-genera, 

 Fratercula, Briss. Mormon, II. 



Whose bill, shorter than the head, is more elevated 

 at its base than it is long, which gives it a very 

 extraordinary appearance ; a folded skin generally 

 ornaments the base of it. Their nostrils, placed near 

 the edge, are mere narrow clefts. Their small 

 wings can just sustain them for an instant. They 

 live on the sea, like the guillemots, and build on the 

 rocks. 



Puffin, Lath. ^Ica Arctica, L. ; and A. Lahradoria, 

 Gm. Mormon Fratercula, Tem. Enl. 275. Brit. 

 Zool. pi. H. Edw. 358. 1. Frisch. 192. Naum. 

 Q5. f. lOL 



Of the size of a pigeon ; has the thighs and upper 

 part of the body black ; and underneath, white. It 

 builds occasionally on the rough coasts of England, 



