36 



L3'ranaea 



732 

 733 

 734 

 735 

 736 



737 



738 



739 

 740 

 741 

 742 

 743 



744 

 745 

 746 

 747 

 748 

 749 



750 

 751 

 752 

 753 

 754 

 755 

 756 

 757 



CLimnophysa Fitz.) 

 6* Vahlii Bk. 

 5 

 3 



jun. 

 Fingelii Bk. 



5 viator d'Orb. 

 4 peregra Miill. 

 (Neritostoma Kl. Radix Mtf. Gul- 

 naria Leach.) 

 4 desidiosa Say. 

 4 geisericola Bk. 

 Cliilina Oray. 

 2 Dombeyana Brug. 



2 var. spira abbreviata 

 1 fluctuosa Humphr. 



1 major Sow. juv* 

 3* tenuis Gray, 



Pliyiia £iaiii. Buliinus Ad. 



2* Maugeri Gray. 



4 rivalis Mat. & Rack. 



3 sp. 

 4* sp. 



4 crassula D\v. 



2 gyrina Say. 

 Planorbis GreoflT. 

 1* bicarinatus Say. 



Gronland. 



Am. mer. 

 Finland, 



Am. bor. 

 Islandia 



Chile. 



2 var. 



1 sp. 



1 sp. 



1 sp. 



1 lutescens Lam.? 



2 ferrugineus Spix. 

 2 peruvianus Brod. 



Mexico. 



Brasilia. 



Chile. 



I. S. Crucis. 



Pensylvania. 



Coretus Ad. 



Am. bor. 



Brasilia. 



Teneriffa. 



S. Thomas. 



Antill. 



Bahia. 



Coquimbo. 



