CATALOGUE 



OF THE 



FOSSIL SHELLS 

 <&C the arerttmrg iFormattous of the muittti States, 



EMBRACING ALL THE SPECIES HITHERTO PUBLISHED. 



Mr. Conrad having visited many localities of Tertiary fossils on this side of the 

 Mississippi, has been able to add far more than any one else to our knowledge of 

 this series of formations. He has from time to time published the results of his dis- 

 coveries, in his work on the " Fossil Shells of the Tertiary Formations of North 

 America," in the American Journal of Science," Vol. XXIII. and in the " Journal 

 of the Academy of Natural Sciences of Philadelphia. " From these sources, from 

 Mr. Say's papers, and from Mr. Lea's "Contributions," the following catalogue has 

 been compiled ; and for that portion of it which relates to the Eocene of Alabama, 

 I am wholly indebted to Mr. Conrad, who politely furnished it at my request. 



The names of those species which are both recent and fossil are printed in 

 italics. 



FOSSIL SHELLS OF THE MIDDLE TERTIARY FOP 



LMATIOI 



Trochus humilis, 



Conrad. 



Scalaria clathrus, 



Lam. 



reclusus, 



" 



Actaeon novellus, 



Conrad. 



Mitchell i, 



M 



melanoides, 



« 



philanthropus, 



U 



ovoides, 



« 



lapidosus, 



" 



Pyramidella arenosa, 



« 



bellus, 



u 



Natica interna, 



Say. 



Solarium nuperum, 



(1 



her os, 



u 



Delphinula lyra, 



u 



duplicata, 



u 



Pleurotoma biscatenaria, 



(( 



Capulus lugubris, 



Conrad. 



tricaternaria, 



u 



Crepidula costata, 



Morton. 



incilifera, 



" 



fornicata, 



Lam. 



rotifera, 



" 



aculeata 1 



« 



communis, 



" 



convexa, 



Say. 



parva, 



It 



glauca, 



« 



dissimilis, 



" 



plana, 



" 



limatula, 



" 



Dispotaea costata, 



« 



Virginiana, 



" 



grandis, 



u 



pyrenoidcs, 



U 



Sigaretus fragilis, 



Conrad. 



Turritella variabilis, 



" 



Syn. Natica fragilis, " 



octonarius, 



" 



Conus diluvianus, 



Green. 



alticostata, 



" 



Marylandicus, 



u 



laqueata, 



" 



Cypraea annulus, 



Lam. 



sequistriata, 



" 



Voluta solitaria, 



Conrad. 



plebcia, 



Say. 



Oliva litterata, 



Lam. 



