CRESTED GREBE. 201 



additions in the form of ruffs or elongations about 

 different parts of the head and neck. They are more 

 frequent on fresh waters than on the sea, and fly 

 with reluctance. The species are more numerous 

 than the last, and they are more generally distri- 

 buted. 



GENUS PODICEPS. Generic characters. Bill 

 of mean length, straight, slightly compressed, 

 pointed; maxilla with a slight notch; man- 

 dible with the lower outline sometimes show- 

 ing a slight angle; nostrils lateral, linear, 

 pervious, with a protecting membrane; lores 

 naked, wings short, concave; tail, a downy 

 tuft ; legs placed far behind, tarsi much com- 

 . pressed, posteriorly serrated, toes flattened, 

 outer longest, bordered with an ample lobed 

 membrane, nails large, flat; hallux with a 

 broad lobe. 



Types. P. cristatus, minor, fyc. Cosmopolite. 



Note. Habits peculiarly aquatic, partially mari- 

 time, breed on the water ; fly reluctantly ; 

 plumage of the summer characterised by tufts 

 or gular ruffs. 



THE CRESTED GREBE, PODICEPS CRISTATUS. 

 Colymbus cristatus. Linn. Grebe huppe^ Temm. 

 The Crested or Tippet Grebe^or Dab-chick of British 

 authors. This is a large and fine species, we believe 

 the largest of the genus, and in the plumage of in- 



