186 KITTIWAKE GULL. Class U. 



ed near the end with a black bar ; the legs of 

 a dirty bluish white. 



LinncEiis makes this species synonymous 

 with the Larus tridactylus or Tarrock ; but 

 as we have had an opportunity of examining 

 several of each species, and find in all those 

 strong distinctions remarked in our descrip- 

 tions, we must decline assenting to the opinion 

 of that eminent naturalist. 



7. KiTTi- Larus tridactylus. L. dorso ca- Ritsa Islandis, incolis Christi- 



WAKE. nescente, rectricibus albis, ansae, Lille Solvet, Rotter- 



digito postico mutico. Lath. en. Brunnich, No. 140. 



Ind, orn. 8I7. id. Syn. vi. Kittiwake. Sihbald's hist. 



393. Scotl. 20. 



Larus Rissa. Gm. Lin. 594. Arct. Zool. ii. 244. 

 Le Goeland cendre. PL Enl. 

 253. 



Descrip- X HE length of this species is fourteen inches : 

 the extent three feet two. When arrived at full 

 age, the head, neck, belly, and tail, are of a 

 snowy whiteness ; behind each ear is sometimes 

 a dusky spot ; the back and wings are grey ; the 

 exterior edge of the first quil feather, and tips 

 of the four or five next, are black ; the bill yel- 

 low, tinged with green ; the inside of the mouth 



TION. 



