^MERIC^N" 



JOURNAL OF CONCHOLOai 



Vol. I. APRIL 15, 18G5. No. 2. 



OBSERVATIONS ON THE FAMILY STREPOMATID^. 



BY GEORGE W. TRYON, JR. 



1. Classification. 



2. Geographical Distribution. 



The following paper is the result of mj investigations 

 daring the preparation of a monograph of the family, under- 

 taken at the request of, and to be published by, the Smithsonian 

 Institution. I am greatly indebted to its Chief, Prof Jos. 

 Henry, for granting permission to use any of the numerous 

 wood-cuts which have been prepared for the monograph. 



As I have already published, in the Proceedings of the 

 Academy of Natural Sciences of Philadelphia, a fall 

 synonymy of the genera and species of Strepomatidse, in the 

 present paper I will discuss only general considerations relating 

 to their classification and distribution I trust I may be excused 

 for the extensive quotations which it has been thoaght 

 necessary to make in the portion of the paper relating to 

 classification. I have endeavored to present the whole history of 

 the subject in such a manner as to save the trouble of reference 

 to the numerous publications in which the papers quoted from 

 have appeared. 



