42 



BUREAU OF AMERICAN ETHNOLOGY 



[bull. 52 



mens come is difficult, to estimate, as the shells prove to be all of 

 recent species, that is, species still having, so far as known, living 

 representatives. There is one specimen without label, and it proves 

 to be the only one carrying an extinct species. ['] 

 Detailed notes: 



I Label lost during 

 tained. — A. H. 



transportation; specimen from the coast, but the exact locality can not be ascer- 



