ADVEirnSEMENT. 



The present publication (Bulletin No. 35) is the forty-sixth 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 Con- 

 gress of August 10, 1846. 



The publications of the National ]\Iuseum consist of two series — 

 the Bulletins, of which this- is No. 35, in continuous series, and the 

 Proceedings, 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 distributed to libraries promptly after its publication. 



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

 current catalogues of the publications of the Smithsonian Institution. 



Papers intended for publication in the Proceedings and Bulletins 

 of tlie National Museum are referred to the Committee on Publica- 

 tions, consisting of the following 'members: T. H. Bean, A. Howard 

 Clark (editor), Otis T. Mason, John Murdoch. Leonhard Stejnegcr, 

 Frederick "\V. True, and Lester F. "Ward. 



S. P. LANGLEV, 

 St'crcta>y of the Smithsonian Institution. 



]Viishiiigto/i, January 2J, iSSp. 



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