114 LIMN^A. 



aperture, which is proportionally much longer 

 and narrower, and in being only about half 

 their size. 



Subgenus A C E L L A , Eald. 



36. LIMNiEA HALDEMANI, Deshayes. 

 Limmea gracilis, Jay. Hald. Monog. 50, t. 13, fig. 21. 

 Inhabits from Lake Charaplain to Michigan. 



Spurious Species. 



LiMN^A RUGOSA, Val. Hald. Monog. 15, t. 3, 

 f. 4, 5. 

 This is a Bulimus, probably from Mexico or 

 South America. The localities in Valenci- 

 ennes' work are frequently very erroneous, 

 and but little dependence can be placed upon 



them. 



(88) 



