Cytherea Marylandica, 
reposta, 
pandata, 
Sayana, 
Syn. C. convexa, 
albaria, 
Artemis concentrica, 
acetabulum, 
Astarte undulata, 
vicina, 
symmetrica, 
lunulata, 
concentrica, 
obruta, 
Pectricola centenaria, 
Venerupis subvexa, 
Saxicava pectorosa, 
rugosa, 
Syn. 8. distorta, 
Lepton mactroides, 
Corbula cuneata, 
inequale, 
contrata, 
idonea, 
elevata, 
Mactra ponderosa, 
clathradonta, 
APPENDIX. 
Conrad. 
Conrad. 
Say. 
66 
Conrad. 
Say. 
Conrad. 
Mactra congesta, 
delumbis, 
confraga, 
modicella, 
Syn. M. clathrodon, 
lateralis, 
Amphidesma carinata, 
nuculoides, 
lamellosa, 
constricta, 
subovata, 
equale, 
Lutraria canaliculata, 
Anatina antiqua, 
Panopea Fawjasii, 
' Syn. P. reflexa, 
Pandora frilineata, 
arenosa, 
Solen ensis, 
Sanguinolaria lusoria, 
Pholas costata, 
Teredo 
Pholadomya abrupta, 
Serpula granifera, 
Dentalium attenuatum, 
thallus, 

ey) 
Conrad. 
Lea. 
Say. 
Conrad. 
Men. 
Conrad. 
Tin. 
Conrad. 
Lam. 
Conrad. 
Say. 
66 
Conrad. 
FOSSIL SHELLS OF THE LOWER TERTIARY OR EOCENE PERIOD. 
NAMES. 
Bulla galba, 
Solarium elaboratum, 
alveatum, 
funginum, 
exacuum, 
canaliculatum, 
antrosum, 
patulum, 
stalagmium 
amcenum, 
granulatum, 
cancellatum, 
syrtalis, 
Monoceros armigera, 
Conrad. 
Lam. 
Conrad. 
Lam. 
Conrad. 
Lea. 
Conrad. 
iT 
«c 
SYNONYMES. 
B. St. Hillairii, 
S. bilineatum, 
S. Henrici, 
Delphinula plana, 
S. ornatum, 
Ss. scrobiculatum, 
S. elegans, 
S. cancellatum, 
Melongena armigera, 
Fusus Taitii, 
Lea. 
Conrad. 
Lea. 
Lea. 
Conrad. 
Lea. 
