CHAP. XVUI.j 



BIRDS. 



365 



Gygis (1 sp.}, Indian Ocean and Ti-opical Pacific Islands ; Anous 

 (6 sp.), Tropical and Temperate zones ; Nccnia. (1 sp.), South 

 Temperate America ; Rhynchops (3 sp.), Tropical America, Africa, 

 and India. 



Family 120.— PEOCELLAEIID^. (6 Genera, 96 Species.) 



General Distribution. 



The Procellariidse, comprising the Shearwaters, Petrels, and 

 Albatrosses, are universally distributed, but some of the genera 

 are local. 



Puffinus (20 sp.), Procellaria (18 sp.), and Fulmarus (40 sp.), 

 are cosmopolitan ; Prion (5 sp.) and Pelecanoides (3 sp.), belong 

 to the South Temperate and Antarctic regions; Diomedia (10 

 sp.), comprises the Albatrosses, which are tropical, occasionally 

 wandering into temperate seas. 



Family 121.— PELECANID^. (6 Genera, 61 Species.) 



The Pelecanidse, comprising the Gannets, Pelicans, Darters, 

 and Erigate-Birds, although universally distributed, are more 

 abundant in tropical and temperate regions. 



Sula (8 sp.) and Phalacrocorax (35 sp.), are cosmopolitan ; 

 Pelecanus (9 sp.) is tropical and temperate ; Fregetta (2 sp.) and 

 Phaeton (3 sp.) are confined to Tropical seas ; Ptotus (4 sp.) to 

 Tropical and warm Temperate zones. 



