JOIIDX. 



Sulirciiu> ( 'iv.ri.A. Fleming. 1 



Shell thin, smooth or spirally striated, spotted <) l);ui<lr(i near 

 the -uturc, outer lij) sharp, or slightly thickened. 



If. CXNGILLUS, M 

 Oinoilla, Mont.-. 1< S ' S 1, is ;i svnonvin. 



Shell elongated, with subacute spire, whorls flatly convex. 



II < )\.i;v. II. A: A. Adams. is.Vl. 



'rurhinit'onn or somewhat elongated, whorl> convex, cn>picu- 

 ously spirally striated, soinetinies with short longitudinal plica- at 

 tin- suture: aperture oval, peristome continuous, thin or slightly 

 thickened. ]{. STKIATA, .Mt-\ 



Section CI.KAIIA, II. A: A. Adams. \H~>4. 



S;ilicvlindrical, thin, whorls Hatly convex, with obtusr apex : 

 outer lip thin and sharp. 



Animal with flattened, mostly short and clavit'orm tentacK--. foot 

 bifurcate behind. U. PUOXIMA, Alder. 



Section HVAI.A, II. tV A. Adams. \^4. 



Shell elevated conic, thin, hyaline, smooth or spirally striate; 

 aperture oval, >Iiirhtly eniarii-inate anteriorily, outer lip thin, -imple. 

 ( )j)erculum subspiral. 



Tentaeles with setaceou< sunnnits. IJ. viri:i:A. I-'orln-s iV Han- 

 ley. 



Section PLAGIO8TYLA. Fischer. 1ST-. 



Smooth, transjiarent, a|iex [tapillary. last whorl descending: aper- 

 ture semilunar, pillar \'\]) ol>li<|iu'. rectilinear, outer lip not vari 



K. A-TI III \\ \. Fischer. 

 Section BETIA, II. iV A. Adams. 1X.">4. 



NVh'irl.- few. smooth, yentricosc. -potted, -pin- >hort. with oh* 

 rture Buborbicular. Animal with pilose tentacle-. 



It. 1MI.< 111.1,'KI.MA. .lei: 



Sul,-( ction MH-I:M-I.TI.\, Mont-, i 



Inipcrtiirate or rimate, minute, brightly colored, often fax-iate, 

 ith. 



18 a -ynnnyin. I{. IM I;(,ID v, Thil 



\. M.>n!~. i 

 ol. 1 lobular, unicolored, lip thickened, covering the um- 



bili. U. A i,in-:i:i, .l'il, 



