158 



*S'. Scaldianum, Normand, Mem. Soc. Sc. Pnjs. et Nat. Bord. 

 i, 1854. Prime Cat. Corb. 12, 1863. Uurope. 



41. S. securis, Prime. 



Cyclas securis, Prime, Proc. Soc. N. H. Bost. iv, 160, 1851. 



Cyclas cardissa, Prime, loc. sup. cit. iv, 160, 1851. 



Cyclas securis, Prime, Ann. Lye. N. H. N. Y. v, 218, pi. vi, 



1852. 

 Cyclas crocea, Lewis, Proc. Soc. N. H. Bost. v, 25, 1854. 

 >S'. cardissa, Prime, Brit. Mis. Cat. Conchif. 268, 1854. 

 *S'. securis, Prime, loc. sup. cit. 268, 1854, Prime Cat. Corb. 



11, 1863. Smith. Inst. Misc. Coll., Prime Monog. Corb. 



49, f. 47, 1865. U. S. of America. 



42. S. simile, Say. 



Cyclas similis. Say, Nichols. Encycl. 1st Amer. edit, ii, pi. 1, 



f. 9, 1817. 

 Cyclas sulcata, Lamarck, An. v, 560, 1818. 

 Cyclas Sarratogea, Lamarck, loc. sup. cit. v, 560, 1818. 

 Cyclas lasmampsis, Rafinesque, Ann. gen. Sci. phys. et nat. 



V, 319, pi. Ixxxii, f. 19, 20, 1820. 

 Cyclas striatina, Lamarck, Ferussac, Mag. Zool. 1835. 

 Cyclas sulcata, Lamarck, Delessert, Recueil, pi. vii, f. 3, 1841. 

 Cyclas Sarratogea, Lamarck, loc. sup. cit. pi. vii, f. 9, 1841. 

 Cyclas similis. Say, Gould Invert. 72, f. 53, 1831. 

 Cyclas rhomhoidea. Say, C. B. Adams, Vermont, 18, 1842. 

 Cyclas solida, DeKay, N. H. N. Y. v, 229, pi. xxv. f. 265, 



1843. 

 Cyclas gigantea, Prime, Proc. Soc. N. B. Bost. iv, 157, 1851. 

 Cyclas ponderosa. Prime, Proc. Soc. N. H. Bost. iv, 157, 1851. 

 *S'. simile. Say, Brit. Mus. Cat. Conchif. 265, 1854. 

 >S'. giganteum, Prime, loc. sup. cit. 267, 1854. 

 iS. ponderosu77i. Prime, loc. sup. cit. 268, 1854. 

 S. sulcatum, Lamarck, Prime Cat. Corb. 8, 1863. Smith. 



Inst. Misc. Coll., Prime Monog. Corb. 33, f. 25, 1865. 



North America. 



43. S. solidulum, Prime. 



Cyclas solidula, Prime, Proc. Soc. N. H. Bost. iv, 158, 1851. 

 Cyclas distorta. Prime, loc. sup. cit. iv. 158, 1851. 

 S. solidulum. Prime, Brit. Mus. Cat. Conchif. 269, 1854. 

 *S'. distortum, Prime, loc. sup. cit. 271, 1854. 

 S. solidulum. Prime, Cat. Corb. 9, 1863. Smith. Inst. Misc. 

 Coll., Prime Monog. Corb. 36, f. 27, 1865. 



U. S. of America. 



44. S. solidum, Normand. 



Cyclas solida^ Normand, Not. Cycl. Valenc. 6, f. 3, 4, 1844. 



