PROCEEDINQS 



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 Sphenicidae 235 



1. Sfheniscusmendiculus 235 



Family Stercorariidae 236 



2. Siercorarius pomariuus 236 



Family Laridie . 237 



3. Larus ficliginosus 237 



4. Larus franklinii 237 



5. Creagrus furcatus 237 



6. Sterna fuliginosa 239 



7. Anotts siolidus galapagensis 239 



Family Diomedeidje 240 



S. Diomedca irrorata 240 



Family Procellariidse ... 241 



9. Pnffinus obscurus subalaris . , 241 



10. yEstrelata phcBopygia 242 



11. Procellaria tethys 242 



12. Oceanodroma cryptoleucura ... 243 



13. Oceanites gracilis 243 



Family PhaethontidjE . . 243 



14. Phaethon (cthereus 244 



Family Sulidx- 244 



15. Sula variegata 244 



16. Sula piscatrixwebsteri 246 



17. Sula nebouxi 248 



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



