78 THE NAUTILI'S. 



Quadrula coccinea Con. 

 Quadrula pustulosa Lea. Very common. 

 Quadrula ohliqua Lam. 

 Quadrula verrucosa Barnes. 

 Quadrula globata Lea. 

 Quadrula lachrymo&a Lea. 

 Quadrula plicata Say. 

 Quadrula cooperiana Lea. 

 Quadrula herns Say. Barren county. 

 Quadrula metanerva Rat'. 

 Quadrula cylindrica Say, 

 Quadrula solida Lea. 

 Plagiola elegans Lea. 

 Plagiola securis Lea. 

 Plagiola donaciformis Lea. 

 Lampsilis ventricosus Bar. Barren River. 

 Lampsilis multiradiatus Lea. 

 Lampsilis ligamentinus Lam. Very common. 

 Lampsilis ligamentinus Lam. var. 

 Lampsilis gracilis Barnes. 



Lampsilis anodontoides Lea. Ohio, Green and Barren Rivers. 

 Lampsilis rectus Lam. 

 Lampsilis cumberlandicus Lea. 

 Lampsilis luteolus Lam. L. lienosus Con. 

 Lampsilis texasensis Lea. 

 Lampsilis ovatus Say. L. obscurus Lea. 

 Lampsilis regularis Lea. 

 Lampsilis alatus Lea. Common. 

 Lampsilis iris Lea. Lampsilis perdix Lea. 

 Lampsilis subrostratus Say. 

 Lampsilis plaidcostatus Lea. 

 Lampsilis parvus Barnes. 

 Lampsilis caliginosus Con. 

 Lampsilis vanuxumensis Lea. 

 Lampsilis nigerrimus Lea. 

 Lampsilis fatuus Lea. 

 £7mo grandiferus Lea. Rather common. 



£/Wo gibbosus Barnes. Both the purple and salmon-colored forms 

 are found in all streams. 



