137 

 Gen. LXXVIl. LESTRIS. /%. 



263 sp. t Lestris cataurhactes. Tem. The common Skua. 

 Cataracta shua. Brunn. 



Nest. June— July, on grassv rocks, in the Shetland isles, and in the North. 

 Eggs. 2, pale olive, or olive-brown, blotched sparingly with ash-grey, rust colour and dark 

 brown. 



263 « 



263^ 



263 



264 sp. * Lestris pomarina. Tem. The Pomarine Skua. 



Nest. June— July, on rising ground in salt marshes and on rocks, in the Arctic regions. 

 Eggs. 2-3, "pointed, greyish-olive, sparingly spotted with blackish brown." lem. 



264 a 



264^ 



264 c 



