PROCEEDINGS 



OF THE 



WASHINGTON ACADEMY OF SCIENCES 



VOL. V, PP. 231-372. JANUARY 28, 1904, 



PAPERS FROM THE HOPKINS-STANFORD GALA- 

 PAGOS EXPEDITION, 1898-1899. 



XVI. 



BIRDS. 



BY ROBERT EVANS SNODGRASS AND EDMUND HELLER. 



CONTENTS. 



PAGE. 



Introduction 234 



Family Sphenicidse 235 



1 . Spheniscus mendiculus 235 



Family Stercorariidae , 236 



2. Stercorarius pomarinus 236 



Family Laridae 237 



3. Larus fuliginosus ... 237 



4. Larus franklinii 237 



5. Creagrus furcatus 237 



6. Sterna fuliginosa 239 



7. Anous stolidus galapagensis 239 



Family Diomedeidae . . . 240 



8. Diomedea irrorata 240 



Family Procellariidae ... 241 



9. Puffinus obscurus subalaris 241 



10. ^Estrelataphceopygia 242 



11. Procellaria tethys 242 



12. Oceanodroma cryptoleucura . 243 



13. Oceanites gracilis 243 



Family Phaethontidse 243 



14. Phaethon cethereus 244 



Family Sulidae ...... 244 



15. Sula variegata 244 



16. Sula piscatrix webster i * 246 



17. Sula nebouxi 248 



Proc. Wash. Acad. Sci. , January, 1904. 231 



