Clafs II. TARROCK. 425 



IX. The T A R R O C K. 



La Mouette cendree. Belon a<v. Larus tridaftylus. Lin.fyji* 224. 



169. Faun. Suec.fp. 157. 



I Gaviacinereaalia. Aldr. a<v, iii. La Mouette cendree tachetee. 



35. Briffbn av. vi. 185. tab. 17. 



Wil. orn. 346. /£• 2. 



Raii/yn.aqj. 128. ■#>"• Zoo/. 142. 



HE length is fourteen inches-, the breadth Defer, 

 three feet : the weight only feven ounces. 

 The bill is black, fhort, thick, and flrong, the head 

 large : the color of that, the throat, neck, and whole 

 under fide are white : near each ear, and under the 

 throat, is a black fpot : on the hind part of the neck 

 is a black crefcent, the horns pointing to the throat : 

 the back and fcapulars are of a bluifh grey : the leffer 

 coverts of the wings dusky, edged with grey ; the 

 larger next to them, of the fame color ; the reft grey: 

 the exterior fides, and ends of the four firft quil- 

 feathers are black: the tips of the two next black ; all 

 the reft wholly white: the ten middle feathers of the 

 tail white, tipt with black ; the two outmoft quite 

 white : the legs of a dusky aflh-color. In lieu of the 

 back toe, it has only a fmall protuberance, which is a 

 certain character of this kind. 



X. The 



