SYSTEMATIC INDEX. 



ORDER LARIFORMES. .. 



FAMILY LARID.^. 

 SUB-FAMILY STERNIN^. 

 ecu. Hydrochelidon, Boie. 



I. nigra (Linn.). 



2 hybrida (Pall). 



3. leucoptera (Meisner & S-.1 

 CCIII Gelochelidon, Biehm, 



I. anglica (Mont ). ... 

 CCIV. Hydroprogne, Kaup. 



I, caspia (Pall.). 

 CCV. Sterna, Linn. 



1. fluviatilis, Naum. ... 



2. macrura, Naum. 



3. dougalli, Mont. 



4. canliaca, Gm. 



5. anaestheta, Scop. 



6. fuliginosa, Gm. 



7. minuta, Linn. 

 CCVI. Angus, Steph. 



I. stolidus (Linn.). 

 SUB-FAMILY LARIN.E. ... 

 CCVII. Xema, Leach. 



I. sabinii (J. Sabine).... 

 CCVIII. Rhodostethia, Bp. 



I. rosea (Macgill.). ... 

 CCIX. Larus, Linn 



1. minutus, Pall. 



2. ichthyaetus, Pall. ... 



3. melanocephalus, Natt. 



4. Philadelphia (Ord.). 



iZ) 



