3(34 



GEOGllAPHICAL ZOOLOGY. 



[PAKT IV. 



cosmopolitan; Chaulelasmus (2 sp.), PaUearctic region and North 

 America; Spatula (5 sp.), all Temperate regions; 3[alacorhjnchus 

 (1 sp), Australia; Cairina (1 sp.). Tropical South America; 

 Bmnta (1 sp.), Palaearctic region and India ; FuUgula (5 sp.), 

 North Temperate regions and New Zealand; JEtliya (5 sp.), 

 ralnearctic and Nearctic regions, India, Australia, and South 

 Africa ; Metoviana (1 sp.), South Temperate America ; Buccphala 

 (4 sp.), Nearctic and Paltearctic regions ; Harclda (2 sp.), North- 

 ern Paheartic and Nearctic regions ; Hymenolaimus (I sp.), New 

 Zealand ; Camjytolainius (1 sp.), North-east of North America ; 

 Microptcrus (1 sp.). Temperate South America ; Somateria (o 

 sp.), Arctic and sub-arctic regions ; (Edcmia (5 sp.), Nearctic 

 and Palai'arctic regions ; Biziura {\ sp.), Australia ; Thalassornis 

 (1 sp.). South Africa ; Erismatura (6 sp.), all America, South- 

 east Europe and South Africa ; Nesovxtta (1 sp.), Auckland 

 Islands; Mcrganctta (3 sp.), Andes of Columbia to Chili; Mcr- 

 gus (6 sp.), Paliearctic and Nearctic regions, Brazil, and the 

 Auckland Islands. 



F.^MiLY 119.— LAEIDiE, (13 Genera, 1?.2 Species) 



Neotropical 



.? UBItEGlONS. 



1.2.3.4 



Genekal Dlstuibution. 



N EAUCTIC 

 SUB-EEGIOSS. 



1.2.3.4 



Australian 

 Sub-regions. 



1.2.3 .4 



The Laridae, or Gulls and Terns, are true cosmopolites, in- 

 habiting the shores and islands of every zone ; and most of the 

 genera have also a wide range. They are therefore of little use 

 in the study of geographical distribution. The genera are as 

 follows : — 



Stercorariua (6 sp.), cosmopolitan, most abundant in cold and 

 temperate zones; RhodostdJiia (1 j-p), North America; Lams 

 (60 sp.), cosmopolitan ; Xcma (1 sp.). North Temperate zone ; 

 Greagrus (1 sp.), North Pacific ; BagopMla (1 sp.), Arctic seas ; 

 i^t'sm (3 sp.), Arctic and Northern seas; Sterna (36 sp.), cos- 

 mopolitan ; Hydrochelidon (12 sp.), Tropical and Temperate zones; 



