174 PUPINiE. 



Genus MEGASPIRA, Lea. 



Shell clausiliaform, turreted, multispiral ; aperture semi- 

 ovate ; columella transversely plicated ; peristome expanded, 

 the margins unequal. 



Syn. Pyrgelix, Beck. 



Ex. M. elatior, Spix, pi. 76, fig. 5. 



The shells of this genus are remarkable for the length of 

 the spire, which in M. elatior has no less than twenty- 

 five, close-set, narrow, hut gradually-increasing whorls ; the 

 species inhahit the forests of Brazil. 



Species of Megaspira. 

 elata, Gould. elatior, Spix. 



Genus BALEA, Prideaux. 



Shell clausiliaform or clavate, multispiral ; aperture semi- 

 oval or sub-pyriform ; columella somewhat uni-plicated, 

 simple ; peristome expanded, margins unequal. 



Syn. Balsea, Gray. Balia, Swains. Fusulus, Fitz. 



Ex. B. perversa, Linnmts, pi. 76, fig. 6. Shell, B. 

 perversa, fig. 6, a. 



The species of Balea live among moss at the roots of 

 trees ; they inhahit Britain, Norway, Hungary, Italy, and 

 Spain. 



Species of Balea. 



castanea, Pfeiff. Sarsi, Phil. 



glabra, Pfeiff. Tristensis, Leach. 



peregrina, Gould. ventricosa, Leach. 

 perversa, Linn. 



