BIRDS OF BERMUDA. QUE 
advisable to introduce it formally into my list. Moreover, to judge from 
Dr. O. Finsch’s remarks on P. obscurus in his paper on the Birds of 
Ninafou Island, in the Pacific (P. Z. S., 1877, Part IV, pp. 786, 787), it 
would appear “that the black or white of the under tail-feathers forms 
no specific character, and even less so the more or less extent of the 
black along the rectal line.” 
Mr. Bartram informs me “The Black-vented Shearwater is 15 inches 
long; wing, 9; tail, 34; bill, 14 (not measuring along the curve); tarsus, 
14; middle toe and claw, 12; under parts white; upper parts black; 
tail black; sides of the cheek below the eyes black; crissum white, but 
a black bunch of feathers on each side, lapping over and meeting across 
the vent; in other respects it is made like the Cahow, only larger; it 
does not exactly answer to Coues’ description, but the black below the 
eyes is the distinguishing mark, and being a female may account for the 
difference. Theegg is white and measures 23 by 14 inches.” 
To judge from the size of the bird and its egg, I should myself be in- 
clined to consider this specimen a Manx Shearwater (P. anglorum), 
which has been already shown to breed in Bermuda by Mr. Bartram, 
but I have no means of deciding the question, and am compelled to 
leave it in its present unsatisfactory state. 
Order PYGOPODES. 
Family PODICIPID. 
Genus PoDICEPS, Lath. 
184. Podiceps cornutus, Lath. Horned Grebe. 
Colymbus auritus, Linn. 
Colymbus duplicatus, Miill. 
Colymbus cornutus, Gm., Naum. 
Podiceps cornutus, Lath., Temm., Boie, Steph., Keys. & Blas., Gray, Schl., 
Bp., Sw. & Reich., Nutt., Aud., Lawr., Coues, Finsch, Snow, and of authora 
generally. 
Dytes cornutus, Kaup. 
Colymbus obscurus, Gm. 
Podiceps obscurus, Lath., Leach. 
Colymbus caspicus, S. G. Gm., Gm. 
Podiceps caspicus, Lath. 
Colymbus nigricans, Scop. 
Podiceps arcticus, Boie. 
Podiceps sclavus, Bp. 
Length, 14; wing, 5.75; tarsus, 1.75; bill, .90. 
Hab.—North America; Europe; Asia. (Coues.) 
One shot by Dr. Cole, on the 24th of November, 1846, is now in the 
