NATURAL SCIENCES OP PHILADELPHIA. 293 



37. Sph. gracile, Pr. Ads. Rec. Gen. ii. 450. 1858. 



Cycl. gracilis, Pr. Bost. Proc. iv. 156. 1851. loc. sup. cit. iv. 274. 1852. 



Bgt. Amen. 1, p. 8. 1853. 

 Hab. N. America. 



Cycl. Gravesi, d'Orb. Prod. 2, 323. 1850. Is Cyrena G r a v e s i , Desh. 

 Cycl. hammalis, Rafin. Bory. It. Vt. Amen. gen. scie. pny. v. 319. 



1820. Is Corbicula hammalis , Fer. 

 Cycl. hermaphrodita, Mart. Mag. Nat. Hist. 1, 402, pi. 1, f. 1, 2. 



Is Galatbea r a d i a t a . 

 Sph. Herminii, Witld. In Collect. Cuming. 1859. Is Pisid. c as e s t a- 



n u m , Bgt. 



38. Sph. inconspicuum, Pr. Proc. Zool. xxviii. 1860. 

 Hab. Asia Minor. 



39. Sph. Indicum, Desh. Proc. Zool. xxii. 342. 1854. 

 Hab. E. Indies. 



Sph. inornatum, Pr. Ads. Rec. Gen. ii. 450. 1858. Is Sph. acumi- 

 natum, Pr. 



Cycl. intermedia, d'Orb. Prod. 2, 304. 1850. Is Cyrena interme- 

 dia , Desh. 



Cycl. Islandica, Lam. An. Mus. vii. 420. 1806. Is Cyprina I s la n - 

 d ica . 



Cycl. isocardioides, Norm. Drap. Moll. Fr. 668. 1852. Is Sph. 

 cornenm, Scop. 



40. Sph. Jayanum, Pr. Ads. Rec. Gen. ii. 450. 1858. 



Cycl. Jat/ensis, Pr. Bost. Proc. iv. 157. 1851. Loc. sup. cit. iv. 279. 

 1S52. Jay, Cat. iv. ed. 465. 1852. Bgt. Amen. 1, p. 8. 1853. 

 Hab. N. America. 



41. Sph. Jeannoti, Norm. Cycl. 2. 1854. 

 Hab. France. 



42. Sph. J u g 1 e r i , Dkr. 



Cycl. Jugleri, Dkr. Wald. 168. 1834. 

 Hab. Germ, (fossils.) 



Cycl. lac us tr is, Drap. Hist. Moll. 130, pi. x. f. 6, 7. 1805. Is Sph. 

 ovale, Fer. 



43. Sph. lacustre, Fer. Bgt. Amen. 1, p. 6. 1853. 



Tellina lacustris, Muller. Verm. 2, 204. 1774. 



Cardium lacustre, Mont. Test. Brit. 89. 1803. 



Cycl. calyculata, Drap. Hist. Moll. 130, pi. x. f. 14, 15. 1805. 



Musculium lacustre, Link. Beschr. Coll. Univ. Rostock, 152. 1807. 



Cycl. lacustris, Fer. Meth. Conch. 128. 1807. 



Tellina tuberculata, Alten. Syst. Abh. 4, pi. 1, f. 1. 1812. 



T. tenera, Schrot. An. Wett. x. 316. 1814. 



Cycl. tuberculata, Klees. Dissert, Tub. 45. 1818. 



Tellina stagnicola, Sheph. Trans. Linn. Soc. xiv. 150. 1823. 



Cycl. Perezeii, Villa. Mss. 1858. 

 Hab. Europe. 

 Cycl. laevigata, Schum. 170, pi. xii. f. 1. 1817. Is Corbicula fl u m i - 



na li s, Adams. 

 Cycl. laevigata, Desh. Diet, class. Hist. Nat. v. 220. 1824. Is Pisid. 



laevigatum, Bgt. 

 Cycl. lasmampsis, Rafin. Bory, St. Vt. An. gen. scie. phy. v. 319, 



pi. 82, f. 19, 21. 1820. Is Sph. sulcatum, Lam. 

 Cycl. Leachii, Ziegl. Villa. Cat. 44. 1841. Is Sph. corneum, Scop. 

 Cycl. lent icular is, Norm. Cycl. 8. 1844. Is Pisid. c a ser tan um, 

 Bgt. 



I860.] 



