650 

 GA vi.f:. 



LARIDyE. 



LARID.I'.. 



RissA TRiDACTYLA (Linnfeus*). 



THE KITTIWAKE GULL. 



Larus tridactylus. 



RissA, Stcphensi. — Bill rather short and stout, the upper niandilile consider- 

 ably decurved to th? tip, the lower mandible compressed, with the intercrural 

 space long and narrow ; nostrils median, linear, oblong. Wings long, pointed, the 

 first primary slightly exceeding the second. Tail slightly but perceptibly forked 

 in the young : nearly square in the adult; tarsus very short in proportion to the 

 foot ; hind loe very small and usually obsolete ; claws rather small, slightly curved. 



The Kittiwake is a Gull which is generally distributed 

 on the shores of the ]jritish Islands, and remains with us 

 in larger or smaller numbers throughout the year. Of 



* Larus tridactylus, Ltnnwus, Syst. Nat. Ed. 12, i. p. 224 (17GG). 

 t Stephens, ex Leach, in Shaw's Gen. Zool. xiii. pt. i. p. 180 (1825). 



