GENUS 94. LAKUS. GULL. 
SPECIES. L. ^TRICILLA. 
LAUGHING GULL. 
[Plate LXXIV.— Fig. 4.] 
Larus atrici/Za, Linn. Syst. ed. 10, tom. i, p. 136, 5. — Gmel. Syst. 
I, p. 600, 8. — Ind. Orn. p. 813, 4. — Laughing Gull, Catesby, i, 
n. 89. — Lath. Gen, Syn. ui, p. 383, 12. — Jlrct. Zool. JVo. 
454. — La Mouette rieuse, Bmss. vi, p. 192, 13, pi. 18, jig. 1. 
— Mouette d capuchon plombd, Temm. Man. d^Orn. p. 779. — 
Peale’s Museum, JV’o. 3381. 
Length seventeen inches, extent three feet six inches; bill, 
thighs, legs, feet, sides of the mouth and eyelids, dark blood 
red; inside of the mouth vermilion; bill nearly two inches and 
a half long; the nostril is placed rather low; the eyes are black; 
above and below each eye there is a spot of white; the head and 
part of the neck are black, remainder of the neck, breast, whole 
lower parts, tail-coverts and tail, pure white; the scapulars, 
wing-coverts, and whole upper parts, are of a fine blue ash 
colour; the first five primaries are black towards their extremi- 
ties; the secondaries are tipt largely with white, and almost all 
the primaries slightly; the bend of the wing is white, and nearly 
three inches long; the tail is almost even, it consists of twelve 
feathers, and its coverts reach within an inch and a half of its 
tip; the wings extend two inches beyond the tail; a delicate 
blush is perceivable on the breast and belly. Length of tarsus 
two inches. 
The head of the female is of a dark dusky slate colour, in 
other respects she resembles the male. 
In some individuals, the crown is of a dusky gray; the upper 
part and sides of the neck of a lead colour; the bill and legs of 
