296 PROCEEDINGS OE THE ACADEMY OP 



Cycl. Par an en sis, d'Orb. Voy. Anier. Sept. 567. pi. 83. f. 23, 25. 

 1844. Is Corbicula Paranacensis, Pr. 



55. Sph. Parisiense, Pr. 



Cycs. transversa, Lev. Grateloup. Moll. Fr. Cont. 49 1855. 

 Hab. France, (fossil.) 



56. Sph. par turn eium, Say. Bgt. Sph. 12. 1854. 



Cycl. partumeia, Say. Ac. N. S. Phil. II. 2, 380. 1822. Fer. Mag. Zool. 



1835. Jay, Cat. 3d ed. 16. 1839. Gould, Eept. 73, f. 54. 1841. 



Dekay, 223, pi. 25, f. 262. 1842. C. B. Ads. Vt. 18. 1842. Mighles. 



Bost. II. iv. 318. 1843. Linsl. Amer. II. 48, 276. 1845. C. B. Ads. 



Cat. 30. 1847. Jay. Cat. iv. ed. 32. 1850. Pr. Bost. Proc. iv. 165. 



1851. Stimps. N. E. Moll. 16. 1851. Pr. Bost. Proc. iv. 278. 1852. 



Hartm. Cat. 1853. Bgt. Amen. 1, p. g. 1853. Lew. Bost. Proc. v. 



122. 1S55. Lew. loc. sup. cit. vi. 2. 1856. 

 C. cornea, Lam. (Var. 2.) Lam. vi. 558, 1818. Lam. (Desh ed. vi.) 



268. 1835. 

 C. orbicularia, Barrat. Linsl. Amer. II. 48, p. 276. 1845. Bgt. Amen. 



1, p. g. 1853. 

 C. mirabilis, Pr. Bost Proc. iv. 167. 1851. Bgt. Amen. 1, p. 8. 1853. 

 C. cceridea, Pr. Bost. Proc. iv. 161. 1851. Jay, Cat. iv. ed. 465. 1852. 



Bgt. Amen. 1, p. 7- 1855. 

 Sph. orbicularium, Barrat. Ads. Rec. Gen. ii. 450. 1858. 

 Sph. mirabile, Pr. Loc. sup. cit. ii. 450. 1858. 

 Sph. cceruleum, Pr. Loc. sup. cit. ii. 450. 1858. 

 Hab. N. America. 



Cycl. par v a, Sowb. Trans. Geol. Soc. 2d ser. iv. 345. pi. xxi. f. 7. 

 1836. Is Cyrena p a r v a, Morris. 



57. Sph. patella, Gould. Ads. Rec. Gen. ii. 450. 1858. 



Cyclas patella, Gld. Bost. Proc. iii. 292. 1850. Pr. loc. sup. cit. iv. 



285. 1852. 

 Hab. N. America. 

 Sph. p e 1 1 u c i d u m, Pr. Ads. Rec. Gen. ii. 450. 1858. Is Sph. trun- 



ca t u m, Linsl. 

 Cycl. P e r e z e i i, Villa. Mss. 1858. Is Sph. 1 ac us t r e, Fer. 



58. Sph. perpusillum, Gartn. 



Cyclas perpusilla, Gartn. Ann. der Wetter. 316. 

 Hab. Europe. 



Cycl. Pfeifferi, Ziegl. Porro. Malac. 121. 1838. Is Pisid. am ni- 

 cum, Jen. 



59. Sph. pisidioides, Gray ? Ads. Rec. Gen. ii. 450. 1858. 

 Hab. England. (Not described.) 



60. Sph. pis urn, Math. Bgt. sph. 43. 1854. 



Cyclas pisum, Math. Cat. Meth. 148, pi. xiv. f. 10, 11. 1842. 



C. subpisum, d'Orb. Prod. 3, 19. 1852. 

 Hab. France, (fossil.) 



Cycl. p i s u m, d'Orb. Prod. 2, 322. 1850. Is Cyrena p i s u m, Desh. 

 Cycl. plumbeus. Villa. Cat. 44. 1841. Is Sph. corneum. Scop. 

 Sph. pondero sum, Pr. Ads. Rec. Gen. ii. 450. 1858. Is Sph. sul- 

 catum, Lam. 

 Cycl. prise a, Eichw. Nat. Hist. Skizze. 207. Is Pisid. pris cum, Eichw. 



61. Sph. prom inu Hum, Reuss. Bgt. Sph. 47. 1854. 



Cyclas prominula, Reuss. Dkr. et Meyer Paleont. 2, 242, pi. iv. f. 14. 

 1852. 

 Hab. Germany, (fossil.) 



[June, 



