VOL. XV 



1893. 



'•] PROCEEDINGS OF THE NATIONAL MUSEUM. 755 



as the east coast aualogiie of the Pacific iV. Recluziana, though the 

 latter exhibits reniaikable extremes of variation in many ways, and. is 

 ]nuch less constant in form than dnpUcata. T have collected both of 

 these western tonus at many i)laces, from Puget Sound to San Diego. 

 L. ZenvVi/is occasionally met with of extremely large size; it is the 

 giaut of the Naticas; it is frecjuently eaten by the Indians inhabiting 

 the region bordering on the sound. 



Family NEKITID^. 



Geiins NERITINA Lamarck. 



Neritina reclivata Say. 



Numerous living examples. 



Dall gives the distribution of this species, as St. Augustine and both 

 coasts of Florida, Texas, and the West Indies to Jamaica, the latter 

 place being its southerly limit so far as known at the present time. 

 Wherever found it is usually quite abundant. It is a rather x>retty 

 and well characterized species. It is quite common around the mouth 

 of Hillsboro River where the stream flows into the bay near Tampa. 



Class CEPHALOPODA. 



Family SPIRULID^E. 



Gcuus SPIRULA Lamarck. 



Spirula peionii Lamarck. 



One example, shell. 



This is a pelagic si)ecies and its shells are found, sometimes in vast 

 numbers, after storms or high winds, cast up on the beaches. The 

 shells which are internal, are quite common in collections, and are often 

 sold and used for fancy shellwork, but complete and perfect exami^les, 

 animal, shell and all, are rarely met with in the museums. 



Wasihngton, D. C, Xovemhcr 15, 1803, 



