GENEBA AND SPECIES OF BIBDS. 143 



51. orrgottUB, Shufeldt, I. c. Oregon (Pliocene). 



52. raeilttioncfti, VanBeneden, Bull. Acad. Belg. rsxii. Belgium (Pliocene). 



p. 216 (1871). 



XVIII. GABIANUS, Bruch. 



(Saunders, Cat. B. xxv. p. 297, 1896.) 

 1. pacificus {Lath.), (p. 297.) Australia, Tasmania. 



XIX. LEUC0PH2EUS, Brueh. 



(Saunders, t. e. p. 299.) 



1. scoresbyi (Traill), (p. 299.) Southern S. America. 



Falkland Ie. 



XX. PAGOPHILA, Kaup. 



(Saunders, t. c. p. 301.) 



1. eburnea (PMpps). (p. 301). Circumpolar Regions. 



W. Europe & 



E. N. America 



XXL RISSA, Stephens. 



(Saunders, t^c. p. 305.) 



1. rissa (Linn.), (p. 305.) Circumpolar, Arctic, & 



[tridactt/la (Linn.), Saunders, Oat. B. p. 305.] Sub-arctic Eegions. 



N.W. Europe & N.E. 



America. 

 Caspian & Mediterranean 



Seas (winter). 

 N. American coasts 



2. brevirostris (Bruch). (p. 312.) Is. of Bering Sea. 



Family H. STERCORARIIDffl. 



(Saunders, Cat. B. xxv. p. 314, 1896.) 



L MEGALESTEJS, Bp. 



(Saunders, *. c. p. 314.) 



1. catarrhactes (Linn.), (p. 315.) N.W. Europe. 



S. Greenland. 

 N.W. America. 

 N. Atlantic coasts 

 (winter). 



