LIST OF PLATES 



IN VOLUME VI. 



1. Black Tekn. Hydroclitlidon nigra (Linn.) 



2. White-winged Black Tekn. Hydroclitlidon leu 



coptera (Schinz) 



3. "Whiskered Tern. Hydrochelidon hybrlda (Pallas) 



4. Gull-billed Tern. Sterna anyllca, Montagu 



5. Caspian Turn. Sterna caspla, Pallas 



6. Sandwich Tern. Sterna cantiaca, J. F. Gmelin 



7. Roseate Tern. Sterna douyalll, Montagu . 



8. Common Tern. Sterna fluviatilis, Naum. . 



9. Arctic Tern. Sterna macrura, Nauru. 



10. Little Tern. Sterna minuta, Linn. 



11. Sooty Tern. Sterna fully Inosa, J. F. Gmelin 



12. Lesser Sooty Tern. Sterna anastheta, Scopoli 



13. Noddy Tern. Anous stolldus (Linn.) 



14. Sabine's Gull. Larus sabinii, J. Sabine . 



15. Cuneate-tailed Gull. Larus rvseus, Macg. 



16. Do. Do. Immature and winter 



17. Bonaparte's Gull. Larus phlladelphicus (Onl) 



18. Little Gull. Larus minutus, Pall 



19. Black-headed Gull. Larus rldlbundus, Linn. 



20. Mediterranean Black-headed Gull. Larus 



melanocephalus, Natterer 



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