CLASSIFICATION OF BIRDS. 297 



FAMILY fff.-rr-Tm Gulls (Lari), iv., 186. 



Sub-Family 1.— 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. ichthyaetus), 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 (Diomede^;), 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. fuli- 

 ginosa), iv., 207. 



FAMIL Y VI— The Petrels (Procellari^e), iv., 207. 



Sub-Family 1. — The Giant Petrels (Procellaria), iv., 208 ; the Giant Petrel (P. gigantea), iv., 208 ; the Ful- 

 mar Petrel (P. glacialis), iv., 209 ; the Cape Petrel (P. Capensis), iv., 211. 

 „ „ 2. — The Duck Petrels (Prion), iv., 213 ; the Duck Petrel (P. vittatus), iv., 213. 



FAMILY VII— The Storm Petrels (Oceanides), iv., 214. 



Sub-Family 1. — 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. 

 Sub-Family 1. — The Puffins (Puffinus), iv., 217 ; the Manx Puffin, or Shearwater (P. Anglorum), iv.. 218. 



SUB-ORDER XVI. 



OAR-FOOTED SEA-FLIERS (STEG A N O P O D ES). 



FAMILY I. — The Tropic Birds (Piscatrices), iv., 219. 



Sub-Family 1. — The Tropic Birds Proper (Phaeton), iv., 219 ; the White-tailed Tropic Bird (P. aethereus), 

 iv., 220 ; the Red-tailed Tropic Bird (P. phcenicurus), iv., 220. 

 „ „ 2. — The Gannets (Sula), iv., 221 ; the Common Gannet (S. alba), iv., 223. 



FAMILY II— The Frigate Birds (Tachypetes), iv., 224. 

 Sub-Family 1. — The Frigate Birds (Tachypetes), iv., 224 ; the Frigate Bird (T. aquila), iv., 224. 



FAMILY III— -The Cormorants (Haliei), iv., 227. 



Sub-Family 1. — The Darters, or Snake Necks (Plotus), iv., 228; the Anhinga (P. anhinga), iv., 228; Le 

 Vaillant's Snake Bird (P. Levaillantii). iv., 230. 

 >, ,, 2. — The Cormorants Proper (Phalacrocorax), iv., 230 ; the Cormerant (P. carbo), iv., 234. 



VOL. IV. — 156 



