172 
1. Buack 
BACKED. 
DeEscripP- 
TION. 
BLACK BACKED GULL. Crass Il. 
- GENUS: XX. ‘GULL. 
BIL strong, strait, bending near the end; an 
angular prominency on the lower man- 
dible. 
Nostrits linear. 
TonGveE a little cloven. 
Bopy light, wings large. 
Lec and back toe small, naked above knee. 
Larus marinus. L. albus, dor- Larus marinus. Gm. Lin. 598. 
so nigro. Lath. Ind. orn. Faun. Suec. sp. 155. 
813. id. Syn. vi. 371. Danis Blaae maage, Norvegis 
Wil. orn. 344. Svartbag, Havmaase. Brun- 
Raii Syn. av. 127. nich, 145. 
Le Goiland noir. Brisson av. Br. Zool. 140. L. Nae Zool. 
vi. 158. Hist. dois. viii. il. 249. 
405. Pl. Enl. 990. 
THE weight of this species is» nearly five 
pounds; the length twenty-nine inches; the 
breadth five feet nine. ‘The bill is very strong, 
thick, and almost.four. inches long;. the co- 
lor a pale yellow, but the lower mandible is 
marked with a red spot, with ablack one in the 
middle. The irides are yellow ; the edges of the 
eye-lids orange color . the head, neck, whole 
