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 accquired 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 pub- 

 lished in the Bulletin series under the heading Contributions from the United States 

 National Herbarium. 



This work forms number 233 of the Bulletin series. 



Frank A. Taylor, 

 Director, United States National Museum. 



UNITED STATES 



GOVERNMENT PRINTING OFFICE 



WASHINGTON : 1963 



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

 Washington 25, D. C. - Price $1.25 



