Subfamily Outhalicixj:. 

 Genus Puxctum. (Morse.) 



51 Punctuni minutissimum, Lea. Under leaves. 



Subfamily Pupin.e. 

 Genus Cioxella, (Jeff.) 



52 Zua subej'lindrica, Linn. Damp roadsid.'s. A lai-- 



ger variety occurs in woods. 



Genus Pupa, (Dr.) 



53 Leueochila armifera, Say. Rocky places. 



54 contracta, Saij. Rocky places. A igmaller 



variety occurs in woods. 



55 corticaria, Satj.f. Under bark of half-de- 



cayed logs. 



56 fallax, Sa^/. Under stones. 



57 rui)icola, Say. Rocky places. 



58 Pupilla pentodon, Say. " " 



Genus Vertigo, (Mull.) 



59 Isthmia milium, Gould, r. Beds of leaves. 



60 ovata, Say r. 4; u u 

 01 simplex, Gould, r. " " " 



Subfamily Succixix.«. 

 Genus Succinea. 



