THE PURPLES. 33 



and somewhat rough, while others are marked with 

 bands of color and are richly ornamented with nu- 

 merous wrinkled frills. This last characteristic has 

 determined the name for the species, Purpura cris- 

 pata, Chem., cris-pa'-ta, the Wrinkled Purple. One 

 of the synonyms by which it is known is P. lactuca, 

 Bsch., which name was probably given to white 

 specimens. 



The shells are always strong and heavy, and have 

 an average length of an inch and a half. Many 

 specimens are longer and wider than the engraving, 

 while some are even smaller. 



Though the smooth white varieties are very plain 

 in their appearance, some of the northern beauties, 

 all frilled and banded as if to attract attention, are 

 worthy of a place in any choice collection of hand- 

 some shells. 



(3) 



