4 SYNOPSIS GENERUM. 



which he founds many of his generic distinctions are so slight, that 

 minute variations are exalted to the rank of distinct characters ; hence 

 a multiplicity of genera are created, which tend rather to confuse than to 

 simplify a study, in which the endless modifications of nature should he 

 arranged in a clear and concise form, in accordance with her perfect 

 harmony of contrivance. 



SYNOPSIS GENERUM 



MOLLUSCA CONCHIFERA. 



Class I. TROPIOPODA. 



Order I. Bimusculosa. 



Family 1. Tubicola. 



Aspergillum. Gastrochaena. 



Clavagella. Teredo. 



Fistulana. 



