14 
APPENDIX. 
Ostreiidce. 
I 
Exoyra costata, Say. American Journal of Science, vol. n, p. 43, 1S20- 
Ostrea Americana , Deshayes. Encyclopedic Metkodique, vol. ii, p. 
304, 1830. 
O. toroaa , Morton. Synopsis, p. 52, pi. 3, fig. 9. 
O. plumosa, Morton. ib. p. 51, pi. 3, fig. 9. 
Spondylidoi. 
Plicafula urticosa, Morton. Synopsis, p. 62, pi. 10, fig. 2. 
Iiadulidce. 
Radula oxypleura, Courad. Geological Survey of North Carolina. 
R. denticnlatieosta, Gabb. Proceedings of the Academy of Natural Sci- 
ences, 1861, ]). 327. 
PectinidoR. 
Camptonectes bellistriatus, Conrad. American Journal of Conchology, 
vol. 5, p. 99, pi. 9, fig. 11. 
Nuculidoe: 
Nucula percrassa, Conrad. Journal of the Academy of Natural Sciences, 
vol. 3, 2d series, p. 327, pi. 35, fig. 4. 
Perrisonota protexta, Conrad. American Journal of Conchology, vol. 
5, p. 98, pi. 9, fig. 24. 
Arcidce. 
Idonearca Tippana, Conrad. Journal Acad. Nat. Sciences, vol. 3, p. 
328, pi. 35, fig. 1. 
Trigonoarca, (Breviarca) umbouata, Conrad. Geolog. Survey of North 
Carolina. 
T. (Breviarca) perovalis, Conrad. 
ib. 
ib. 
T. (Breviarca) congesta, Conrad. 
ib. 
ib. 
T. (Breviarca) Carolinensis, Conrad. 
ib. 
ib. 
T. passa, Conrad. American Journal 
Conchology, 
vol. 5, 
fig. 17. 
T. cuneiformis, Conrad. ib. 
Nemodon brevifrons, Geolog. Survey of North Carolina. 
