Genus Helix. 



20 Mpsodoii penijsylvanicn, Green, f. In seclo*e and thii'ket 

 .'30 profunda, Say. i. 



81 •'^■lyii, Bum. r. 



32 Ihyroides, Say. 



38 Patuhi alternata, Say. 



Woods. 



Everywhere abundant. 



34 perspectiva Say. 



35 solitaria, Say. 



36 striatella, Anth. 



37 Stenotrema fraterna, Say. i. 



38 hirsuta, Say. 



39 leaii, Ward. r. 



40 monoclon, Back. . 



41 stenotrema, Fer. f. 



42 Strobila labyrinthica, Say. f. 



Under bark and logs. 

 Thickets. 

 Lumber-yards n e a r 



water, 

 Var. nionodon? 

 Found everyerehw. 

 Var. monodon? 

 Damp plnces. 

 Woods, Kentucky s i d e 



of river. 

 Under bark of half-de- 

 cayed logs. 

 Stone walls. 

 Wooded hill-sides. 



43 Triodopsis appressa, Say. 



44 fallax. Say. 



45 inflecta, Say. " " 



46 palliata, Say. Under logs. 



47 tridentata. Say. (looodvar.) Woods. 



48 tridentata, Say. (rock var.) r. Kooky places. 



49 Vallonia costata, 3Iull. r. Ribbed variety ( ?) of 



minuta. 

 oO minuta, Say. (piilchella.) Rocky places. 



