370 



CoMPLANARiA, Swainson. 



complanata, Con. [Alasraoclonta complanata, Bar.] Wisconsin and 



Neenah Kiver?, (I\Ir. Barnes.) Sheboyg-an and Rock Rivers. 



costata Con. [Alas costata Uaf. A. rugosa Bar.] Wisconsin and Neenah 



Rivers, (Mr. Barnes.) Milwaukee and Rock Rivers. 



compressa, Con. [Sympbynota conipressa Lea.] Milwaukee River. 



Alasmodonta, Say. 



marginata, Say. Milwaukee, Sheboygan and Rock Rivers. 

 leptodon Raf. [Unio planus, Bar. U. tenuissima, Lea.] Wisconsin 



River, (Mr. Barnes.) 

 Strophites, Rafinesque. 



calceolus, Con. [L^nio calceolus, Lea.] Milwaukee, Root and Rock 



Rivers. Rock Lake, 

 edentulus, Con. [Alas edentula, Say. Anodonta edentula, De Kay.] 



' Milwaukee and Rock Rivers. 

 ANODOifTA, Bruguieres. 



cataracta, Say. [A. fluviatilis. Lea.] Milwaukee River. Fourth Lake. 

 declivis. Con. [A. plana, Lea.] Milwaukee River, 

 ferussaciana, Lea. Milwaukee, Sheboygan and Rock Rivers. Pike 



Creek. Oconomowoc and Silver Lakes. 

 imbecihs, Say. [A. incerta, Lea.] Milwaukee River. 



Cyclas, Lamarck. 



similis, Say. Common. 



PALAEONTOLOGY OF WISCONSIN, 



Being an enumeration of the Fossil Organic Remains discovered in the rocks 

 of that State. By I. A. Lapham. 



This list of fossils will be of use in making a geological survey of the State. 

 As an instance of the importance of the careful study of these interesting relics 

 of a "former world," I may mention that this list shows conclusively that the 

 rocks of this State belong to the Silurian period, and are therefore much older 

 than the Coal Formation. We hence infer, with confidence, that no coal beds 

 of workable value, will ever be found in Wisconsin; and all the money hereto- 

 fore expended, or that will hereafter be expended by ignorant persons, in search 

 of this valuable product, is only a useless waste of capital. 



PLANT.E. 



ScoLiTHUs, Hall, Pal.ieont. of N. Y., vol. I. p. 2. 



linearis, Hall, Pal. N. Y., vol. I. p. 2. One mile north of Lyons, Sauk 



Co , also near Madison. 



