6 Standard Catalogue of 



52 Larus vegje r 637. c 77.") 



Vega Gull 



53 Larus califoniicus r 668. c 777 



California Gull 

 51 L v.'u * delv.v trends r 633, c 7?S 



Ring-billed Gull 

 55 LOTUS brachyrhynchus r 67.). c 780 



Short-billed Gull 

 [53] L.irus cm-is r tin, c 779 



Mew Gull 

 57 Larus heermaimi r 672, c 781 



Heermann's Gull 

 53 Larus atricilla r 673, c 7&J 



Laughing Gull 



59 Lams franklinii r 674. r 7-7 



Franklin's Gull 



60 Larus Philadelphia r '575. c 



Bonaparte's Gull 

 [60.1] Larus minutus 

 Little Gull 



61 Rho:lo.stethia rosea r 67J, c 7-, 



Ross's Gull 



<-! Xema sabinii r 677, c 790 

 Sa bine's Gull 



63 Gelochelidon nilotica r 679, c 79^ 



Gull-billed Tern 



64 Sterna tschegrava r 6SO. c 793 



Caspian Tern 



65 Sterna maxima r 681, c 794 



Royal Tern 



66 Sterna elegans r 682, c 795 



Elegant Tern 



67 Sterna sandvicensis acuflavida r 683. c 796 



Cabot's Tern 

 [6Sj Sterna trudeaui r 684, c 802 



Trudeau's Tern 



6J Sterna forsteri r 685, c 798 

 F< uster's Tern 



70 Sterna hirundo r 686, c 797 



Common Tern 



71 Sterna paradisaea r 6S7. cl?93 



Arctic - 



