165 

 Gen. LXXXVI. SULA. B,hs. LXXXVII. COLYMBUS. Lath. 



319 sp. t SuLA BASSANA. 5rm. The Gamiet. 



Nest, on cliffs, in the Hebrides and on the Scotch coast, especially on the Bass-rock. 

 Eggs. 1-2, rough, chalky, white. 



319<2 



319^ 



319 c 



320 sp. t CoLYMBUs GLAciALis. Lin. The northern Diver. 



Nest. May — June, by the side of fresh-water lakes in Iceland and the North. 

 Eggs. 1-2, brown-olive, sparingly spotted with dark brown. 



320 a 



320^ 



320 c 



