Conchifera. 233 Trigonia. 



Pyrrha, d'Orb. Prod. 161. Fr. U. G. 



quadrata, Sow. G. T. 2d s. vol. iv, pi. 17, f. 12. E. U. G. 



quadrata, Agas. not Sow. (daedalea), Etud. Trigon. 27, 6, 7-9. 

 Robiaaldina, d'Orb. P. F. 139, 199, 1-2. Fr. ' N. 



rudis. Park. Org. Rem. 177, 12, 10. E., Fr., G. N. 



scabra. Lam. An. S. Vert. vol. vi, p. 63. E., Fr., Gr. C. 



scabra, Morris, 7iot Lam. (caudata), Catal. 



scapha, Agas. Etud. Trigon. 15, 7, 17-20. Fr. iV. 



semiculta, Forbes, G. T. vol. vii, 151, 18, 9. India. C. 



semiornata, d'Orb. (orientalis), Voy. Astrol. pi. iv, 31, 32. 

 sinuata. Park. Org. Rem. pi. 12, f. 13. E., Fr. U. G. 



sinuafa, d'Orb. not Park, (suborbicularis), Voy. Astrol. pi. 4, 



29-30. 

 spinosa. Park. Org. Rem. pi. 12, f. 7. E., Fr. U. G. 



spinosa, Sow. not Park, (ornata), M. Con. 86. 

 spectahills, Sow. (rudis), M. Con. 544. 



suhcrenulata, d'Orb. (Tocaimaana), Am. Merid. 87, 19, 7-9. 

 subexcentrica, d'Orb. Prod. 240. Gr. C. 



suborbicularis, Forbes, Gr. T. vol. vii, 150, 18, 10. India. C. 



subpulchella, d'Orb. Prod. 240. G. C. 



sulcata, Agas. (carinata), Etud. Trigon. 44, 8, 5. 

 sulcataria. Lam. An. S. Vert. vol. vi, p. 84. 



tenuisulcata, Duj. M. O. S. F. vol. ii, 225, 15, 11. Fr. G. 



Texana, Con. Emory's Rep. 148, 3, 3. Tex. C. 



thoracica, Morton, Syn. 65, 15, 13. N. J., Del., Ala,, Miss., 



Tenn., Texas. G. 



Tocaimaana, Lea, Am. Phil. Soc, vol. vii, pi. 9, f. 8. N. Gren. N. 

 ventricosa, Krauss, Sp. (Lyrodon), Gabb, 1861. S. Africa. U. G. 



UNICARDIUM, d'Orb. 1847. 



inornatum, d'Orb. (Cardium), Prod. 79. Fr. N. 



laevigatum. Sow. Sp. (Corbula), d'Orb. Prod. 163. E. U. G. 



Venericardia, Lam. 1801. See CARDITA. 



*VENILIA, Morton, 1834 (Cyprma,i9ars d'Orb.). 



Conradi, Morton, Syn. 66, 9, 3. N. J., Del., Ala., Miss., Tenn. G. 



* I have in my collection a cast of a fourthi species, from New Jersey, larger 

 than V. Conradi and more abrupt. The genus is certainly very distinct from 

 Cyprina, and will probably include some species published under that name. 



VOL. VIII. — 2f 



