59 



The terrestrial forms are distributed among 14 families and 

 27 genera. 



TERRESTRIAL MOI.l.lSKS. 



Family. Genus. No. of No. of 



species: Varieties. 



Helicinidte Helicina 1 



Auriculidse Carychium 2 



Valloniidse Vallonia :; 



Pupidse Strobilops 3 



Pupoides 1 



Bifidaria 7 1 



Vertigo 5 ] 



Pupilla 1 



CochUcopidie CodUicopa ] 



Succineidn' Succinea 9 3 



Helicidw Polygyra 21 6 



A chatinidse Opens 1 



Testacellidii' Testacella 1 



Circinariidtf Circinaria 1 



Zonitlda' Omj>h<tlinn 4 



1 'itren 5 



Vitrina 1 



Euconulw 2 1 



Zonitoides 5 



Oastrodonta 5 



Limacidse TAmax 2 



Agriolimax 2 



Philomycidse Philomycus 1 



Endodontidse Pyramidula 4 



ffelicodiscus 1 



Punctum 1 



Sphyradium 1 



Total 91 12 



A comparison of our fauna with that of other states is in- 

 teresting, although the comparison is scarcely accural •■ in one 

 or two cases on account of the age of the records | Maine L864; 

 Alabama, 1876)*. 



*The figures of the following table are mostly from Mr. Bryant Walker's paper, 

 'Revision of our Present Knowledge of the Molluscan Fauna of Michigan", 1894. 



