Conchifera. 208 Ostrea. 



congesta, Con. Nicollett's Eep. p. 169. Neb., Mo., Ark. C. 



conicQj Sow. Sp. (Exogyra), d'Orb. P. F. 726 

 convexa, Say. (G. vesicularis), Am. Jour. Sci. vol. ii, 1st s. p. 42. 

 clavata, Nilss. (Gr. vesicularis), P. Suec. 30, 7, 2. 

 coluhrina, Goldf. not Lam. (niacroptera), P. Gr. 8, 74, 5. 

 Coidoni, Defr. (Exogyra), d'Orb. P. F. 698, pi. 466 and 467. 

 conirostris, Munst. (acutirostris), in Goldf. P. G. 25, 82, 4. 

 crepidula, d'Orb. (E. inflata), Voy. Astrol. pi. 8, f. 43, 44. 

 crenulata, Tuomey, 1855, Proc. Acad. p. 171. Ala. C. 



crenulimargo, Eoeui. Kreid. Tex. 76, 9, 6. Texas. C. 



crenulimarginata, Gabb, J. Acad. 2d s. vol. iv, 398, 68, 40, 41. 



Tenn. C. 



cretacea, Morton, Syn. 52, 19, 3. S. Carolina. * 



cristacomplicata, Schlot. (frons), Petr. P. 242. 

 crista ffalli, Schlot. (frons), Petr. 240. 

 cristahastellatus, Schlot. (frons), Petr. 243. 

 cristaurogalU, Schlot. (larva), Petr. 213. 



curvirostris, Nilss. P. Suec. 30, 6, 5. Sw., G. C. 



denticulifera. Con. Jour. Acad. 2d s, vol. iii, 329, 36, 1-8. 



Ala., Miss., Tenn. C. 



diluviana, Lam. 1767, Syst. Nat. p. 114. Fr., G., Sw., Crimea. 



a, U. G. 

 diluviana, Nilss. not Lam. (frons), P. Suec. 32, 6, 1-2. 

 deltoidea, Lam. (G. vesicularis). Lam. pi. 25, f. 2-5. 

 dorideJlaj Lam. (larva), An. S. Vert. vol. vi, p. 210. 

 distorta, Sow. (E. bulla), G. T. vol. iv, 229, pi. 22, f. 21. 

 falcata, Morton (larva), Synop. 50, 3, 5. (^aot Sow.) 

 flahella, Goldf. Sp. (E. plicata), d'Orb. P. F. p. 717. 

 flahelliformis, Nils, (semiplana), P. Suec. 31, 6, 4. Sw , G. C. 



frons. Park. Org. Eem. 217, 15, 4. E., Fr., G., Sw. C, 



Galloprovincialls, Math. (Acutirostris), Cat. 193, 32, 8. 

 Gehrdensis, Roera. (Turonensis), Nord. Kreid. p. 46. 

 glabra, M. & H. 1857, Proc. Acad. p. 146. Nebraska. C. 



harpa, Goldf. (frons), P. G. 11, 75, 3. 



hemispherkaj d'Orb. Prod. (G. cymbrium), x\m. Mer. 106, 22, 3-4. 

 hippopodium, Nilss. P. Suec. 30, 7, 1. G., Fr., Sweden. G. 



liq^popodlum, d'Orb. pars, not Nds. (Lesueurii), P. F. 731, 



481, 4-6. 



=* It was unfortunate that Dr. Morton should have named this species Cretacea, 

 since it has since been proven to be an Eocene fossil. Sec note under Cunns 

 gyrutus. 



