576 PROCEEDINGS OF THE ACADEMY OF 



PPTEWOLIBJE. 



PETRICOLA, Lam. 



P. compressa, H. C. Lea, Journ. Amer. Philos. Soc. ix. 239, 34, 15. 

 P. Carolinensis, C. 



P. pholadi/ormis, Tuomey and Holmes (not Lam.), Plioc. Foss. S. C. 87, 21, 5, 



PLIORYTIS, Conrad. 



P. (Petricola) centenaria, C. Sill, xxiii. 341. Mioc. 17, 10, 1. 



Psammocola regia, H. C. Lea, Trans. Amer. Philos. Soc. ix. 234, 34, 17. 

 P. Pliocena, Tuomey and Holmes, Pliocene Foss. S. C. 91, 22, 8. 

 Capsa centenaria, D'Orbig. Prodrom. iii. 103. 



CYRENIDJE. 

 CORBICULA, Megerle. 



0. (Cyrena) densata, C. Mioc. Foss. 68, 39, 2. Tuomey and Holmes, Plioc. 

 Foss. S. C. 77, 20, 14. Emmons, Geol. N. C. 290, 215a. 



CARDIIDJE. 



CARDIUM, Lin. 



Subgenus Cebastoderma, Poli. 



0. acutilaqueatum, C. Miocene Foss. 34, 18, 2. 

 C. Carolinensis, C. 



C. magnum, Tuomey and Holmes (not Born), Plioc. Foss. S. C. 63, 19, 1. 

 Emmons, Geol. N. C. 301. 

 C. craticuloides, C. Miocene Foss. 66, 37, 3. 

 C. laqueatum, C. Miocene Foss. 31, 17, 1. 

 C. leptopleura, C. Miocene Foss. 66, 37, 5. 

 C. Yirginianum, C. Miocene Foss. 33, 18, 1. April, 1839. 



C. guadrans, Rogers, Trans. Amer. Philos. Soc. v. 375, 30, 1. Dec, 1839. 



Subgenus L^evicardium, Swains. 

 C. sublineatum, C. Sillim. Journ. xli. 347, 2, 13. Miocene Foss. 66, 37, 4. 



Subgenus Trachycardium, Morch. 



0. muricatum? Lin., Tuomey and Holmes, Plioc. Foss. S. C. 64, 19, 2. Emmons, 

 Geol. N. C. 301, 232-3. 



BUCARDIID^. 



BUCARDIA, Lister. 



B. (Isocardia) fraterna, Say, (I. rustiea, Con.) Miocene Foss. 20, 11, 1. 

 /. Conradi, D'Orbig. Prodromus, iii. 121. 



B. (Isocardia) Markoei, C. Bullet. Nat. Inst. 193, 2, 1. 



CHAMIDJE. 

 CHAMA, Lin. 



C. congregata, C. Sillim. Journ. xxiii. 341. Miocene Foss. 32, 17, 2. Tuomey 



and Holmes, 23, 7, 7 10. 

 C. corticosa, C. ib. 17, 3. Tuomey and Holmes, Plioc. Foss. 22, 7, 1, 2, 3. 



Emmons, 286, 210. 

 C. striata, Emmons, Geol. N. C. 286. 



ARCINELLA, Schum. 



A. (Chama) arcinella, Lin., Tuomey and Holmes, Plioc. Foss. S. C. 22, 7, 4 6. 

 Emmons, Geol. N. C. 286, 210. 



[Dec. 



