48 



BIBLIOGRAPHY OP 



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Nqv. sp. 



Helix pandorae. North West America. 



Kellettii. North West America. 



vellicata. Panama. 

 Bulimus fimbricatus. Panama. 

 Succinea cingulata. Mazatlan. 

 Cyclostoma purum. 



GriRARD (Carl). Die Planarien und Nemertinen Nord-Amerika's. 



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Nov. sp. 



Meckelia fragilis. Massachusetts. 



Polia gracilis. " 



Tetrastemma serpentina. " 



Dugesia maculata==(PZa«an'a maculata, Leidy.) 



Monocelis spatulicauda. Boston. 



