Ord : XV 

 Palmi- 



166 

 Cxen. LXXXVIL COLYMBUS. Lath. 



321 sp. * CoLYMBUS ARCTicus. Lin. The black-throated Diver. 



Nest. May— June, by the margin of fresh-water lakes, in the north of Scotland and iu 



Lapland. . , . , , , 



Eggs. 1-2, reddish-olive, spotted chiefly at the larger end with purple-brown. 



331 « 



321/^ 



821c 



322sp.CoLYMBUS SEPTENTRioNALis. im. Thcred-tliToatedDiver. 



Nest, like the preceding species, in the North. 



Eggs. 1-2, brown-olive, with dots and longitudinal blotches ash-grey and purple-brown. 



322 « 



322 6 



322 



