294 PROCEEDINGS OF THE ACADEMY OP 



Cycl. le ntic ula r is, Boissy. Bull. Soc. Geol. Fr. 2nd ser. iv. 173. 

 1846. Is. Sph. Verneuili, Boissy. 



Cycl. limosa, d'Orb. Voy. Amer. (err.) pi. 82, f. 14, 16. 1844. Is 

 Corbicula variegata, Adams. 



Cycl. littoralis, Fer. Fer. in collect. Michaud. Is Sph. macula- 

 turn, Morelet. 



Cycl. lute a, Ziegl. Anton. Verz. 14. 1839. Is Sph. corneum, Scop. 



Cycl. mac u lata, Anton. Wiegm. Archiv. 284. 1837. Is Sph. 

 Bahiense, Spix. 



44. Sph. maculatum, Morelet. Ads. Rec. Gen. ii. 450. 1858. 



Cycl. maculata, Mt. Test. nov. etc. pt. 2, 25. 1851. Bet. Amen. 1, p. 

 8. 1853. 



Cycl. striatella, Fer. Cat. 20. 1837. Collect. Mus. Paris. 



Cycl. littoralis, Fer. Fer. in Collect. Michaud. Beau. Cat. Moll. Guade- 

 loupe, 24. 1858. 



Pisid diaphanum, Hald. Ac. N. S. Phil. Proc. 1, 53. 1841. 



Cycl. diaphana, Pr. Bost. II. vi. 267. 1852. 



Pisid. Moquinianum, Bgt. Amen. 1, p. 61, pi. 3, f. 13, 17. 1855. 



Cycl. Moquiniana, Gas. Pisid. q. 1855. 



Cycl. Venezuelensis, Pr. Pr. in Collect. Mus. Leiden. 1857. 

 Cycl. major, Sowb. Geol. Trans, n. ser. iv. 176, 346. pi. 21. f. 13. 



1836. Is. Cyrena major, Morris. 

 Cycl, m a j u s c u 1 a, Gldf. Pr. Gerea. 2, 232. pi. 147, f. 6, a, c. 1S34-40. 

 Is Cyrena majuscula, Rcemer. 



45. Sph. Mansianum, Noulet. Coq. fos. 16. 1857. 

 Hab. France, (fossil.) 



Cycl. mar it im a, d'Orb. Cuba, 2, p. 350, pi. 21, f. 47, 50. 1853. Is 

 Cyrena Cubensis, Prime. 



Cycl. Matheroni, d'Orb. Prod. 2, 304. 1850. Is Pisid cuneatum, 

 Petit. 



Cycl. medius, Sowb. Min. Conch, vi. 51, pi. 527, f. 2, 1829. Is Cyrena 

 media, Fitton. 



Cycl. membranaceus, Sowb. Min. Conch, vi. 51, pi. 527, f. 3. 

 1829. Is Cyrena membranacea, Fitton. 



Cycl. minima, Stud. Verz. 93. 1820. Is Pisid. o b t u s a 1 e, Pf. 



Cycl.minor, C. B. Ads. Bost. Proc. 1, 48. 1841. Is Pisid. a bdit u m, 

 Hald. 



Sph. mirabile, Pr. Ads. Rec. Gen. ii. 450. 1858. Is Sph. pa r tu- 

 rn e i u m, Say. 



Sph. modes turn, Pr. Ads. Rec. Gen. ii. 450. 1858. Is Sph. stria- 

 tin u m, Lam. 



46. Sph. m odi oli for m e, Anton. 



Cycl. modioliformis, Anton. Wiegm. Archiv. 284. 1837. Auton. Verz. 



14. 1839. 

 Musculium modioliformis, Anton. Ads. Rec. Gen. ii. 451. 1858. 

 Pisum modioliforme, Anton. Ads. loc. sup. cit. ii. 560. 1858. 

 Hab. S. America. 

 Cycl. Moquiniana, Gas. Pisid. g, 1855. Is Sph. maculatum, 



Morelet. 

 Cycl. Nepeansis, Les. Voy. Coq. ii. 4, 28. pi. 13, f. 14, 1830. Ads. 



Is Corbicula Nepeansis, Adams. 

 Sph. nitidum, C. B. Ads. & Mighl. Ads. Rec. Gen. ii. 450. 1858. Is 



Pisid. A d a m s i, Pr. 

 Cycl. n i t i d a, Hanley. Rec. spec. etc. 1. go. pi. 14. f. 46. 1843. Is 

 Pisid nitidum, Jen. 



[June, 



