6ENEBA AND 8PKCIE6 OF HIRDS. 143 



ftl. orrgonus, Skufeldt, I. c. Oregon (Pliocene). 



62. rarmlJOnrfei, Van lieneden, Bull. Acad. Belg. xxxii. Belgium (Pliocene), 

 p. 21G (1871). 



AN 111. GABIANUS, Bmch. 



(Saunders, Cat. B. x.w. p. 297, 1806.) 

 1. pjuiificvis (Laih.). (p. 297.) Australia, Tasmania. 



XIX. LEUCOPHiEUS, Bmch. 



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



1. scoresb3ri(rraj7/). (p. 299.) 



X\. PAGOPHILA. Kaup. 



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



1. eburnea (PA/>/)s). (p. 301). 



XXI. RISSA, Stephens. 



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



1. rissa (Ziwn.). (p. 305.) 



\tridactyla (Linn.), Saunders, Cat. B. p. 305.] 



\ 



2. brevircstris {Bruch). (p. 312.) 



Southern S. America. 

 Falkland Is. 



Circumpolar Regions. 

 W. Europe & 



E. N. America (winter). 



Circumpolar, Arctic, &, 



Sub-arctic Regions. 

 N.W. Europe & N.E. 



America. 

 Caspian & Mediterranean 



Seas (winter). 

 N. American coasts 



(winter). 



Is. of Bering Sea. 



ramily 11. STERCORARIIDiE. 

 (Saunders, Cat. B. x.xv. p. 314, 189G.) 

 MEGALESTRIS, Bp. 



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

 1. catarrhactes (Alwn.). (p. 315.) 



N.W. Europe. 

 S. Greenland. 

 N.W. America. 

 N. Atlantic coasta 

 (winter). 



