ADVERTISEMENT 



The publications of the Museum of Zoology, University of 

 Michigan, consist of two series — the Occasional Papers and the 

 Miscellaneous Publications. Both series were founded and are 

 being supported by Dr. Bryant Walker, Mr. Bradshaw H. Swales^ 

 and Dr. W. W. Newcomb, except that the cost of the illustrations 

 and distribution are borne by the University. 



The Occasional Papers, publication of which was begun in 1913, 

 serve as a medium for the publication of brief original papers based 

 principally upon the collections in the Museum. The papers are 

 issued separately to libraries and specialists, and, when a sufficient 

 number of pages have been printed to make a volume, a title-page, 

 table of contents, and index are supplied to libraries and individuals 

 on the mailing list for the entire series. 



The Miscellaneous Publications include papers on field and 

 museum technique, monographic studies, and other papers not 

 within the scope of the Occasional Papers. The papers are pub- 

 lished separately, and, as it is not intended that they shall be 

 grouped into volumes, each number has a title-page and table 



of contents. 



Alexander G. Ruthven 



Director of the Museum of Zoology 



University of Michigan 



