160 



tSph. striatinum, Lamarck, Proc. Ac. N. S. Phila. 405, 1861. 

 Prime Cat. Corb. 9, 1863. Smith. Inst. Misc. Coll., 

 Prime Monog. Corb. 37, f. 29, 1865. North America. 



49. S. subtransversum, Prime, Proc. Zool. Lond. xxviii, 



322, 1860. Smith. Inst. Misc. Coll., Prime Monog. 

 Corb. 52, 1865. Mexico, 



50. S. tenue, Prime. 



'QCyclas tenuis^ Prime, Proc. Soc. N. H. Bost. iv, 161, 1851. 

 , ^Sph. tenue. Prime, H. and A. Ad., Gen. Rec. Moll, ii, 450, 

 1858. Prime Cat. Corb. 11, 1863. Smith. Inst. Misc. 

 Coll., Prime Monog. Corb. 17, f. 44, 1865. 



U. S. of America. 

 Si. S. Terverianum, Dupuy. 



Cyclas Terveriana, Dupuy, extram. Gall. test. 87, 1849. Du- 

 puy Hist. Moll. Tr. 674, pi. xxix, f. 9, 1852. 

 S. Terverianum, Dupuy, Rev. Mag. Zool. 135, 1853, Mem. 

 Soc. Sc. Phys. Bord. i, 1854. Prime, Cat. Corb. 12, 

 1863. France. 



62. S. transversum, Say. 



Cyclas transversa, Say, N. Harm. Dissem. 356, 1829. 



Cyclas detruncata, Prime, Proc. Soc. N. H. Bost. iv, 155, 

 1851. 



Cyclas gracilis, Prime, Loc. sup. cit. iv, 156, 1851. 



Cyclas constricta, Anthony, Loc. sup. cit. iv, 274, 1852. 



Sph, transversum, Say, Brit. Mus. Cat. Conchif. 267, 1854. 



Sph. gracile, Prime, Loc. sup. cit. 268, 1854. 



^ph. detruncatum. Prime, Loc. sup. cit. 272, 1854. 



Sph. transversum, Say, Proc. Ac. N. S. Phila. 31, 1862. 

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

 Prime Monog. Corb. 48, f. 45, 1865. U S. of America. 



53. S. triangulare, Say. 



Cyclas triangularis. Say, N. Plarm. Dissem. 356, 1829. 



Sph. triangulare, Say, Proc. Ac. N. S. Phila. 28, 1862. 

 Smith. Inst. Misc. Coll., Prime Monog. Corb. 36, f. 28, 

 1865. Mexico. 



54. S. truncatum, Linsley. 



Cyclas calyculata, Draparnaud, C. B. Ad., Amer. J. Sci. xl, 

 277, 1841. C. B. Ad., Vermont, 18, 1842. C. B. Ad., 

 Cat. 29, 1847. 



Cyclas truncata, Linsley, Amer. J. Sci. n. ser. vi, 234, f. 3, 

 1848. 



Cyclas pellucidea, Prime, Stimp. Moll. N. E. 16, 1851. 



