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Eocene Fossils of the United States. 219 
i 
Pi 
List of organic remains in the Ameriean Eocene which are 
oa 
9. 
analogous to European species. 
Crassatella aleformis,Con. Very much like C. rostrata, Desh. 
in outline, but differs in having sulci over the whole disk. 
C. alta, Con. Approaches very near to C. tumida. (Paris. ) 
Fistulana larva, Con. Allied to F. elongata, Desh.  ( Paris.) 
_Corbula oniscus, Con. Closely allied to F. angustata, Sow., 
and resembles C. ombonella, Desh. 
. Panopea elongata, Con. Allied to P. intermedea, Sow. [Bog 
nor Rocks, England. ) 
Lucina lapidosa, Con. Allied to L: contorta, Desh., but is 
much more elevated. 
Laucina symmetrica, Con. Allied to L. scalaris, Lam. (Paris. ) 
Cytherea Mortoni, Con. Analogous to C. erycinoides, Lam., 
and to C. suberycinoides, Desh. (Paris. 
C. alle pies Con., has a general resemblance to C. levi- 
gata, 
Cardita Banting, Con. Analogous to C. acutiscosta, Lam. 
(Paris. ) 
. C. rotunda, Lea. Analogous to Venericardia asperula, Desh. 
(Paris. ) 
Cardium Nicolleti, Con. Closely analogous to C. semigra- 
nosum, Sow., (Paris,) and resembles C. semistriatum, Desh., 
but differs in having radiating lines over the whole disk. 
Cucullea gigantea, Con. Very like C. crassatina, Lam. 
(Paris. ) 
Byssoarca cuculloides, Con. Somewhat resembles Arca rudis, 
Desh. (Paris. ) 
. Pectunculus idoneus, Con. Closely appproaches a Paris spe- 
cies in my cabinet whieh I do not recognize among Deshayes’ 
figures of the Paris fossils. 
. Avicula limula, Con. Analogous to A. trigona, Lam. (Paris. ) 
. Ostrea georgiana, Con. Allied to O. longirestris, Lam. 
Turritella Mortoni, Con. Analogous to aspecies in the Lon- 
don clay. 
. T. humerosa, Con. Closely allied to T. imbricataria, Lam. 
(Paris: ) 
