198 APPENDIX. 



near the shore. The animals may be removed by 

 boiling. 



Tueritid^e and CoLUMBELLiD^. — Found on 

 beaches, and also in mud-flats and in deep water. 



Purpurid^e. — Found on ocean rocks in muddy 

 creeks, along sandy shores, and in deep water. Pur- 

 pura capillus is very abundant on the rocks, and 

 countless numbers of Nassa obsoleta are found in the 

 creeks, from Maine to North Carolina. 



Muricid^ are found in deep water, and along shores 

 and flats which are not exposed by the tide; while 

 some are found on mud-flats. 



Helicid^e, Land-Shells. — Land-Shells are found 

 beneath stones, logs, etc., in cellars, and clinging to 

 trees and plants. They are very abundant in some 

 localities. Some are also found in fresh water, es- 

 pecially in springs, where they are sometimes very nu- 

 merous. They should be carefully cleaned, as much 

 of their beauty and value depends upon this. 



Arionid2E. — This is a family of Land-Shells, some 

 of which have little or no shells. They may be found 

 on trees and plants, and should be preserved in alcohol. 

 Others, like the genus Zonites, have shells. 



Philomycid^: are shell-less, and should be preserved 

 in alcohol. 



AuRiciTLiDiE. — Members of this family are found 

 on the land, and also near the salt water, and occa- 

 sionally in it, as in some species of Melampus. 



LiMNiEiD^E. — These genera are all represented by 

 species which live in fresh water, often in rivers and 

 lakes. 



Spirulid^ are found in the open ocean, and occa- 

 sionally drift on shore. 



All shells should be carefully labeled with date and 



