ADVERTISEMEIifT. 



The present publication (Bulletin No. 34) is the forty-fifth of a series 

 of papers intended to illustrate the collections belonging to the United 

 States, and constituting the National Museum, of which the Smithsonian 

 Institution was placed in charge by the act of Congress of August 10, 

 1846. 



The publications of the National Museum consists of two series — the 

 Bulletins, of which this is No. 34 in continuous series, and the Proceed- 

 ings, of which the eleventh volume is now in press. 



The volumes of Proceedings are printed, signature by signature, each 

 issue having its own date, and a small edition of each signature is dis- 

 tributed to libraries i^romptly after its publication. 



Full lists of the publications of the Museum may be found in the cur- 

 rent catalogues of the publications of the Smithsonian Institution. 



Papers intended for publication in the Proceedings and Bulletins of 

 the National Museum are referred to the Committee on Publication, 

 consisting of the following members: T. H. Bean, A. Howard Clark 

 (editor), Otis T. Mason, John Murdoch, Leonhard Stejneger, Frederick 

 W. True, and Lester F. Ward. 



S. P. Langley, 

 Secretary of the Smithsonian Institution. 



Washington, Ajjril 9, 1889. 



