TESTACEA. 83 



soundest arrangements of the Systema must repose on combining the 

 history of the dwelling with that of its inhabitant ; and, certainly, it must 

 be deemed the more interesting detail of science. 



If the precise place of some of the preceding bivalves be mistaken 

 here, it may be partly ascribed to my desire to preserve, instead of 

 hastening to destroy, the living animals. 



