552 APPENDIX B. 



8. 



Sula etesiaca, Thayer and Bangs. 



Western coast of Columbia and Panama (" Bull. Mus. Comp. 

 Zool.," XLVI. (1905), p. 92). 

 General colour brown. 



9. 



Sula brewsteri, Goss ; S. nesiotis, Heller and Snodgr. 



Pacific coast of America. 



General colour brown, head and throat white. 



