27 



iii 



1-10 



29 



ii 



11-13 



30 





10 



31 



iii 



11-13 



32 



iii 



1-6 



33 



iv 



7-8 



34 



iv 



9 



35 



V 



1-3 



36 



V 



4-9 



NORTH AMERICAN CONCHOLOGY. 69 



Pa. PI. Fig. Kame. Locality. 



crassula Dillw. ? 

 Physa aurea Lea. 



fonlana Hald. 

 ancillaria Say. Del. and Conn, rivers. 



P. Sayii Tappan. 

 osculans Hald. Mexico ? India ? 



Bulla fontinalis Chem. ? 

 concolor Hald. Oregon. 



fragilis Mighels. Maine, 



gyrina Say. Mo., Ind., Ohio, VerH, 



P. elliptica Lea. Georgia. 



integra Hald. Indiana, 



scalaris Jay. Florida, 



distorta Hald. Mo., Ohio, Ky. 



hypnorum Lin. Mass., Vt., N. Y.,We3t. 



P. elongata Say. States, Oregon. 



Aplexa hypnorum Gray, &c. 

 3S V 10-12 globosa Hald. Nolacliucky river. 



Physella globosa Hald. 

 39 iv 12-14 microstoma Hald. Kentucky, Ohio. 



Physodon microstoma Hald. 

 P. striata and P. suharata Mke. = P. heterostropha ? 

 Melania cruentata Mke. = Anculosa praerosa Sai/. 



livescens Mke., curta Mke., and /ascia^a Mke. = M. Vir- 



ginica. 

 Warderiana Lea = M. simples Say. 

 acuto-carinata Lea = M. simplex Say. 

 Hildrethiana Lea = M. obovata Say. 

 globula Lea = M. subglobosa Say. 

 virgata Lea = M. subglobosa Say. 

 Cincinnatensis Lea = Anculosa praerosa Say. 

 Anculosa dentata Lea = A. dentata Coulhouy. 

 Melania cafenaria Lea (name preoc.) 

 Lymnea fusiformis Lea (name preoc.) 

 lo tenebrosa Lea = Fusus fluviatilis .S«?/. 

 Melania Kirtlandiana Lea :=: M. ezilis Hald. 

 Paludina angulata Lea ■» 



coosdensis Lea I ^ p, magnifica Co7ir. 

 bimonilifera Lea J 



No. VII.— January, 1844. 



1-6 Planorbis blcarinatus Say. N. Engl, to Ga., N. W. 



Helix angulalus Rackett. Terr, to Tenu. 



P. engonafus Conr. 

 Helisoma bicarinata Swainson. 



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