XII 
EXPLANATION OF PLATES. 
Page. 
Plate 93. Fig. 1. Chroicocephalus cucullatus, Bruch — Hooded Gull.— 4320. Calcasieu, La. (The hood should 
extend further on the throat.) _ 851 
Fig. 2. Chroicocephalus franklinii, Bruch — Franklin's Eosy Gull.— 4897. Kanesville, Mo. April 28, 
1856 851 
94. Sterna elegans, Gambel. — Elegant Tern. — From specimen shot in the harbor of San Francisco by 
Mr. J. Hepburn 8G0 
95. Sterna pikci, Lawr. — Slender-billed Tern. — From original in collection of Geo. N. Lawrence 863 
96. Fig. 1. Uria columba, Cassin. — Western Guillemot. — North Pacific. Capt. Ilodgers 912 
Fig. 2. Uria grylle, Latham. — Black Guillemot.— Sea of Ochotsk. Capt. Bodgers' collection in Smithsonian 
Museum 911 
97. Uria carbo, Brandt. — Crow Guillemot. — From Kamschatka. Phila. Academy 913 
98. Graculus mexicanus, Bonap. — Mexican Cormorant. — Phila. Academy 879 
99. Fig. 1. Podiceps dominicus, Latham. — White-winged Grebe — From specimen in Museum of Phila. Academy 
from Xalapa, Mex... 897 
Fig. 2. T halassidroma melanin, Bon ap. — Black Stormy Petrel. — 13725. San Francisco 830 
100. Podiceps Clarkii, Lawrence.— Clarke's Grebe. 9930. Female. Chihuahua 895 
