PUBLICATIONS OF THE UNITED STATES NATIONAL MUSEUM 



The scientific publications of the United States National Museum include two 

 series, Proceedings 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 fields 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 different 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, sepa- 

 rate 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 246 of the Bulletin series. 



Frank A. Taylor 

 Director, United States National Museum 



U.S. GOVERNMENT PRINTING OFFICE 

 WASHINGTON: 1966 



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

 Washington, D.C., 20402 - Price U (Paper Cover) 



