68 On the Identity of Gyclas elegans, &c. 



thirdly, that no other Cyclas, coming at all under the 'scope of 

 Say's description, has ever been obtained from Lake Champlain ; 

 will see the necessity of the change, and will side with me for 

 the future, in considering Adams's C. elegans.-as Say's C. rhom- 

 boidea, and in labelling it as such. 



Dekay, in his Report, has described and figured the adult 

 of this species under its true name ; the young, however, he calls 

 C. elegans. 



