Sub-Family1.—The Fishing Gulls (Larus), iv., 187; the Great Black-headed Gull (L. marinus), iv., 188; the Lesser Black-backed Gull (L. fuscus), iv., 190.
" "2.—The Ice Gulls (Pagophila), iv., 193; the Ivory Gull (P. eburnea), iv., 193.
" "3.—The Kittiwakes (Rissa), iv., 194; the Kittiwake (R. tridactyla), iv., 194.
" "4.—The Black-headed Gulls (Chroicocephalus), iv., 195; the Laughing Gull (C. ridibundus), iv., 195; the Great Black-headed Gull (C. ichthyaëtus), iv., 197; the Lesser Black-headed Gull (C. melanocephalus), iv., 198; the Little Gull (C. minuta), iv., 198.
" "5.—The Rosy Gulls (Rhodostethia), iv., 203; Ross's Rosy Gull (R. Rossii), iv., 203.

FAMILY IV.—THE SKUAS (LESTRES), iv., 198.

Sub-Family 1.—The Skuas (Lestris), iv., 198; the Common Skua (L. catarractes), iv., 199; Buffon's or the Parasite Skua (L. parasiticus), iv., 202.

FAMILY V.—THE ALBATROSSES (DIOMEDEÆ), iv., 203.

Sub-Family 1.—The Albatrosses (Diomedea), iv., 203; the Wandering Albatross (D. exulans), iv., 205; the Yellow-billed Albatross (D. chlororhynchus), iv., 206; the Sooty Albatross (D. fuliginosa), iv., 207.

FAMILY VI.—THE PETRELS (PROCELLARIÆ), iv., 207.

Sub-Family1.—The Giant Petrels (Procellaria), iv., 208; the Giant Petrel (P. gigantea), iv., 208; the Fulmar Petrel (P. glacialis), iv., 209; the Cape Petrel (P. Capensis), iv., 217.
" "2.—The Duck Petrels (Prion), iv., 213; the Duck Petrel (P. vittatus), iv., 213.

FAMILY VII.—THE STORM PETRELS (OCEANIDES), iv., 214.

Sub-Family1.—The Storm Swallows (Thalassidroma), iv., 215; the Common Storm Petrel (T. pelagica), iv., 215.
" "2.—The Storm Swifts (Oceanodroma), iv., 217; Leach's Storm Petrel (O. Leachii), iv., 217.

FAMILY VIII.—THE PUFFINS (PUFFINI), iv., 217.