522, 



WORMS. rESTACEA. 81. Helix. 



Fufeefcens* Shell rounded fubumbilicate thin, with a femilunar aperture 

 Inhabits Thuringia, Schrcet. erdconch. tab. l.fig. I I. 

 2. Schraet. finf conch tab. 6, fig. 14? 



Shell brown white margaritaceous or wax colour and often 

 barred. 



Terreftrif, Shell umbilieate with an obtufely mueronate fpire, the firflE 

 whorl very large, the reft gradually decreafing: aper- 

 ture femilunar margined. 



Inhabits Schrcet. Erdconb. tab. 2. fig. 19. 



Shell white ftefh-colour or agate with 6 whorls. 



Nivea. Shell rounded umbilieate thin gloiTy- white.* aperture k~m 

 milunar. 

 Inhabits • ••Schr&t. Erdconch, tab. 2. fig. 20. 



Refembles the laft, but is- lei's fhorter and more rounded. 



. 

 Media* Shell flat both fides, umbilieate, with 6 whorls, the frrfr/l 

 round: aperture fuborbicular. 

 Inhabits Germany. Scbrcct. Erdconch. tab. 2. fig. 22, a. 

 Shell white, fometimes barred with brown. 



lenella. Shell umbilieate very thin flat polilhed and convex obove: 

 aperture femilunar comprelfed. 



Inhabits Schtcct. Erdconch. tab. 2. fig. 26. A land fnail. 



Shell white teftaceous horny or margaritaceous, with 5 contigu- 

 ous whorls. 



Crepus- 

 cularis. 





Shell umbilieate depreifed white, with 6 round whorls, the 

 third and fourth brown, the laft reddifh at the tip: I 

 aperture femilunar fmooth. 



Inhabits Guinea. Martin. Mannigf, 4, tab. $»fig» 20, 21. 



Shell (olid, with a fubpyramidal fpire. 



lhalina Shell umbilieate pellucid, above flat and pale brown, be- I 

 neath hemifphrerically white: whorls contrary. 

 Martini n. Mannigf. 4, tab. 3. fig. 22, 23. 

 2. Martini n. Mann. \.tab. $.fig* 24. 

 Chemn. conch. 9, t. 109./", 921, 922. 

 Inhabits mores of Guinea: probably of the fecond divifion. 



A-vellana-. Shell umbilieate obtufely fubtriangular rough plaited and 

 filvery w T ithin : aperture fmooth eared: the fir it whorl 

 with an elevated circle. 

 Spengl. Befch berl. Naturfi 1. tab. 9. fig. 4, 5# 

 Lhemn. conch* 5. t. iSS.f. 1 9 19, 1920. 



Inhabits 



