on some Species of British Quadruped:;, Birds, and Fishes. 28[) 



Lcnoth, thirteen inches and a half ; breadth, thirty-seven ; 

 weight: ei"ht ounces and three quarters-. The bill one inch and 

 a quarter in length to the feathers on the forehead ; the base red 

 orange, tip dusky black] irides dusky: a black spot at the ante- 

 rior corner of the eye; another behind the car; crown of the head 

 mottled dusky and white; forehead, and all the under part, white; 

 back of the neck grayish-white: back, scapulars, greater coverts 

 of the secondary quills, and some of the upper scries of the smaller 

 ones near the shoulder, gray: several rows of the middle scries of 

 coverts brown, edged with dull white; the two first prime quills 

 arc white, margined on both webs with black; in the third the 

 white increases on the outer margin, and the black at the tip ; 

 and at the fifth feather the white part becomes pale gray, and the 

 dark parts increase on the inner web, and become more dusky; 

 secondary quills dusky near their ends, margined with gray,; ter- 

 tials brown; the feathers of the spurious wing are dusky, slightly 

 tipped with white: the ridge of the wing below that, and the three 

 or four larger coverts adjoining, are wholly white; the rest of the 

 greater coverts, impending the prime quills, more or less brown : 

 the outer feather of the tail quite white, the next with two black, 

 or rather dusky-brown, spots at the tip; the rest white, tipped 

 with the same for rather more than half an inch, the ends slightly 

 edged with dirty white: legs and feet dull orange-red. 



The next change brings it to the Brown-headed Gull. Lath. 

 'Si/n. vi. p. 383. Larus erythropus Gmel. Si/st. ii. p. 597- Larus ri- 

 dibundus Ind. Orn. ii. p. 812. var. y. and in the Orn. Diction. 

 will be found under Gull-brown-headed to refer to Gull-black- 

 headed. 



In this there is no material difference from the last, except that 

 the legs have attained their perfect colour (red), and the head 



vol. vii. 2 p assumes 



