THE NAUTILUS. 125 



Mesompliix laevigata, Pfr. 



Mesomphix laevigata lalior, Pils. Save in a characteristic green 

 color, this subspecies is almost inseparable from laevigata ipse. 



Vitrea carolinensis, Ckll. 



Vitrea indenlata, Say. 



Vitrea lewisiana, Clapp. 



Vitrea (Paravitrea) capsella, Gould. 



Vitrea radiatula electrina, var. circumstriata, Taylor. This shell 

 has also been identitied from Arkadelpliia, Arkansas by Mr. George 

 H. Clapp. The species may be found all the way between, but 

 Arkansas is at present its southwestern limit. 



Vitrea (Paravitrea) mullHenlata Binn. This extra-limital locality 

 for multidentata evidences the keenness of Mr. Smith's eyes. It is 

 very rare, and found only in sequestered cleavages of the rocks on 

 the mountain terrace. 



Euconulus cliersinus Say. 



Euconulus sterkii Dall. Only one specimen found. 



Zonitoides arboreus Sny. 



Zonitoides minusculus Say. 



Zonitoides milium Morse. 



Gastrodonta suppressa Say. 



Gastrodonta interna Say. 



Gastrodonta ligera Say. 



Gastrodonta g ilaris Say. 



Gastrodonta demissa Binn. 



Gastrodonta colliselia Pils. Rare. 



Endodontic! a. 



Pyraraidula alternata Say. 



Pyramidula cuniberlandiana Lea. Found on Smither's Mountain, 

 a peak five miles northwest of Iluntsville. Not on Monte Sano. 

 Pyramidula perspectiva Say. 

 Helicodiscus parailelus Say. 

 Punctum pygmaeum Drap. 

 Succinea sp.? 



LymncBidee. 

 Lymnaea humilis Say. 

 Lymnaea columella Say. 



