Publications of the United States National Museum 



The scientific publications of the United States National Museum include two 

 series. Proceed ini^s of the United States National Museum and United States National 

 Museum Bulletin. 



In these series are published original articles and monographs dealing with the 

 collections and work of the Museum and setting forth newly acquired facts in the field 

 of anthropology, biology, geology, history, and technology. Copies of each publication 

 are distributed to libraries and scientific organizations and to specialists and others 

 interested in the various subjects. 



The Proceedings, begun in 1878, are intended for the publication, in separate form, 

 of shorter papers. These are gathered in volumes, octavo in size, with the publication 

 date of each paper recorded in the table of contents of the volume. 



In the Bulletin series, the first of which was issued in 1875, appear longer, separate 

 publications consisting of monographs (occasionally in several parts) and volumes in 

 which are collected works on related subjects. Bulletins are either octavo or quarto in 

 size, depending on the needs of the presentation. Since 1902, papers relating to the 

 botanical collections of the Museum have been published in the Bulletin series under 

 the heading Contributions from the United States National Herbarium. 



This work forms number 287 of the Bulletin series. 



FRANK A. TAYLOR 



Director, United States National Museum 



U.S. GOVERNMENT PRINTING OFFICE 

 WASHINGTON : 1968 



For sale by the Superintendent of Documents, U.S. Oovernment Printing Office 

 Washington, D.C., 20402 - Price $2.50 (paper cover) 



