292 PROCEEDINGS OF THE ACADEMY OP 



Masculium ferrugineum, Kr. loc. sup. cit. ii. 560. 1858. 

 Hab. Africa. 

 Cycl. Ferrusaci, d'Orb. Prod. 3, 19. 1852. Is Cyrena F errusaci , 



Math. 

 Cycl. flavescens, McGil. Moll. Scot. 208, 246. 1844. Is Sph. c o r - 



n e u m , Scop. 



31. Sph. f 1 a v u m , Pr. Ads. rec. gen. ii. 450. 1858. 



Cycl. flava, Pr. Bost. Proc. iv. 155. 1851. Jay, Cat. iv. ed. 465. 



1852. Bost. Proc. iv. 284. 1852. Bgt. Amen. i. p. 8. 1853. 

 Hal). N. Amer. 

 Cycl. fluminea, Bosc. H. n. coq. 3, 38. 1802. Is Corhicula flu - 



mine a, Adams. 

 Cycl. fluviatilis, Bosc. H. n. coq. 3, 38. 1802. Is Corhicula flu- 



minalis, Adams. 

 Cycl. Fontaineii, d'Orb. Voy. Amer. 569, pi. 83, f. 14, 15. 1844. 



Is Cyrena Fontaineii, Phil. 

 Cycl. fontinalis, Drap. Hist. Moll. 130, pi. x. f. 11,12. 1805. Ls 



Pisid. pusillum, Jen. 



32. Sph. f o r m o s u m, Meek & Hayden. 



Cycl. formosa, M. &. H. Ac. N. S. Phil. Proc. viii, 115. 1856. 

 Hah. N. Amer. (fossil.) 

 Cycl. fossarum, Kryn. Mss. (Bgt. Sph. 25. 1854.) Is Sph. corne- 



um, Scop. 

 Cycl. fossulata, d'Orb. Prod. 2, 60. 1850. Is Cyrena fossulata, 



Cornnel. 



33. Sph. fragile, Meek & Hayden. 



Cycl. fragilis, M. & H. Ac. N. S. Phil. Proc. viii. 115. 1856. 

 Hab. N. Amer. (fossil. ) 



34. Sph. fuscatum, Rafin. Ads. Rec. Gen. ii. 450. 1858. 



Cycl. fuscata, Rafin. Mss. Pr. Bost. Proc. iv. 281. 1852. Lewis, 

 'Bost. Proc. v. 122. 1855. 

 Hab. N. Amer. 



Cycl. Galloprovincialis, Math. Cat. Meth. 146, pi. xiv. f. 34. 

 1842. Is Sph. concinnum, Sowb. 



35. Sph. G ar dan ense, Math. Bgt. Sph. 44. 1854. 



Cycl. Gardanensis, Math. Math. Cat. Meth. 145, pi. xiv. f. i. 1842. 

 Hab. France, (fossil.) 

 Cycl. Gar gas en sis, Math. Cat. Meth. 147. pi. xiv. f. 6. 1842. Is 



Aquae S e x t i a e, Sowb. 

 Cycl. G e s 1 i n i, d'Orb. Prod. 3, 109. 1852. Is Cyrena G e s 1 i n i, Desh. 

 Cycl. gib ha, Aid. Trans. Nat. Hist. Soc. Northumb. 1, pt. 1, p. 41, 



1830. Is Psid. o b t u s a 1 e, Pf. 



36. Sph. gib bos urn, Sowb. Bgt. Sph. 45. 1854. 



Cycl. gibbosa, Sowb. Edin. N. Phil. II. vii. 297. 1829. 

 Cycl. Aquensis, Math. Cat. Meth. 148, pi. xiv. f. 8, 9. 1842. 

 Hab. France, (fossil.) 



Sph. giganteum, Pr. Ads. Rec. Gen. ii. 458. 1858. Is Sph. sulca- 

 tum, Lam. 

 Cycl. globosa, Megerle. Ville, Cat. 44, 1841. Is Sph. corneum, 



Scop. 

 Cycl. globosa, d'Orb. Prod. 3, 19, 1852. Is Cyreua globosa, Math. 

 Cycl. globus, Dubois. Fos. Wohln. 59, pi. vi. f. 18, 19, 1831. Is 

 Erycina globus, d'Orb. 



[June, 



