572 PROCEEDINGS OF THE ACADEMY OP 







G. (Panop.) porrecta? C. 

 G. (Panop.) porrecta, C. Miocene Foss. 71,41, 2, 1842. 



G. (Panop.) reflexa, Say, Journ. A. N. S. iv. 153, 13, 4. Miocene Foss. 5, 3, 4. 

 Tuoiney and Holmes, Plioc. Foss. S. C. 100, 24, 1. Emmons, Geol. N. 

 C. 300, 229. 



PARAMYA, Conrad. 

 P, (Myalina) subovata, C. Miocene Foss. 65, 36, 4. 



MYID.E. 



MYA, Lin. 



M. corpulenta, C. Miocene Foss. 68, 39, 1. 



M. producta, C. ib. 1, 1, 1. 



M. reflexa, H. C. Lea, Trans. Amer. Philos. Soc. ix. 234, 34, 10. 



CORBULID^l. 



CORBULA, Brug. 



C. cuneata, Say, Journ. A. N. S. iv. 152, 13, 3. C. Miocene Foss. 5, 3, 2. 



Tuomey and Holmes, Plioc. Foss. S. C. 75, 20, 11. 

 C. elevata, C. Miocene Foss. 7, 4, 3. 



C. idonea, C. Sillim. Journ. xxiii. 341. Miocene Foss. 6, 10, 6. 

 C. inaeqalis, Say, Journ. A. N. S. iv. 3, 2. C. ib. 6, 3, 3. Tuomey and Holmes, 

 Plioc. Foss. S. C. 76, 20, 12. 



ANATINID^l. 



PERIPLOMA, Schum. 



P. (Anatina) antiqua, C. Journ. A. N. S. vii. 130. Miocene Foss. 16, 8, 3. 

 P. alta, C. Proceed. 1862,585. 



THRACIA. 

 T? transversa, H. C. Lea, Trans. Amer. Philos. Soc. ix. 237, 34, 11. 



PHOLADOMYA, Sowerby. 

 Subgenus Margaritaria, Conrad. 

 P. abrupta, C. Foss. Shells of Tert. Form. 26, 12. Miocene Foss. 3, 1, 4. Tuo- 

 mey and Holmes, Plioc. Foss. S. C. 101, 22, 2. Emmons, Geol. N. C. 

 300, 231. 



PANDORA, Soland. 



P. crassidens, C. Miocene Foss. 2, 1, 2. 



PANDORELLA, Conrad. 



Elongated ; a triangular fosset under the beak ; no cardinal teeth. 

 P. (Pandora) arenosa, C. Journ. A. N. S. vi. 131. 



MACTRIDJE. 



MACTRA, Lin. SCISSODESMA, Gray. 



M. (Mactra) delumbis, C. Foss. Shells of Tert. Form. 26, 11. Miocene Foss. 27, 



15, 1. 

 M. ponderosa, C. Journ. A. N. S. vi. 228, 10, 5. Miocene Foss. 25, 14, 1. 

 M. subponderosa, D'Orbig. Prodrom. iii. 100. 



HEMIMACTRA, Swains. SPIZULA, Gray. 



H. (Mactra) congesta, C. Sill. Journ. xxiii. 340. C Miocene Foss. 27, 15, 2. 



Tuomey and Holmes, Plioc. Foss. 98, 23, 10. Emmons, Geol. N. C. 298. 

 H. (Mactra) modicella, C. Sill. Journ. xxiii. 340. Miocene Shells, 25, 13, 3. 

 H. (Mactra) medialis, C. n. s. 

 H. (Mactra) similis? Say, Journ. A. N. S. ii. 309. Emmons, Geol. N. C. 298. 



Tuomey and Holmes, Plioc. Foss. S. C. 97, 23, 8. 



[Dec. 



