63 



7. S. 1 a c i n i a t u m, Lea. 



Schizostoma laciniaxim, hea., Philos. Proc. iv. p. 1(37, Aug., 1845. Philos. 



Trans, x. p. G9, t. 9, f. 57, 1853. 

 Gyrotoma laciniata, Lea, Binney, Check List, No. 324. Brot, List, p. 27. 



8. S. am p lu m, Anthony. 



Gyrotoma ampla, Anthony, Proc. Acad. Nat. Sci., p. 6G, Feb., 1800. Bin- 



ney, Check List, No. 306. Brot, List, p. 27. 

 Melatoma amplum, Anthony, Reeve, Monog. t. 3, sp. 16. 



9. S. n u c u 1 u m, Anthony. 



Melatoma nucula, Anthony, MSS. Reeve, Monog. t. 3, f. 19, Apr., 18G1, 

 Gyrotoma nucula, Anthony, Brot, List, p. 27. 



10. S. cylindraceu m,* Mighels. 



Schizostoma cylindracea, Mighels, Bost. Proc. i. p. 189, Oct., 1844. 

 Gyrotoma cylindracea, Jliill.,-}- Binney, Check List, No. 315. 

 Gyrotoma cylindracea, Gould, Brot, List, p. 27. 



11. S. b u 1 b o s u m, J Anthony. 



Gyrotoma bulbosa, Anthony, Proc. Acad. Nat. Sci., p. 65, Feb., 1860. Bin- 

 ney, Check List, No. 309. Brot, List, p. 27. 



Melatoma bulbonum, Anthony, Reeve, Monog. sp. 22. 



Gyrotoma ovalis, Anthony, Proc. Acad. Nat. Sci., p. 65, Feb., 1860. Binney, 

 Check List, No. 325. Brot, List, p. 27. 



12. S. curtu m,g Mighels. 



Schizostoma curta, Mighels, Bost. Proc. i. li. 189, Oct., 1844. 

 Gyrotoma curta, Mighels, Binney, Check List, No. 314. 

 Gyrotoma curta, Gould, Brot, List, p. 27. 



13. S. gla n s,|| Lea. 



Schizostoma glans. Lea, Proc. Acad. Nat. Sci., p. 186, May, 1860. Jour. 



Acad. Nat. Sci., v. pt. 3, t. 35, f. 52, Mar., 1863. Obs. ix'. p. 70. 

 Gyrotoma glans. Lea, Binney, Check List, No. 320. Brot, List, p. 27. 



14. S. sphcericum, Anthony. 



Melatoma sphxricum, Anthony, MSS., Reeve, Monog. sp. 8, Apr., 1861, 



15. S. p a g d a,^ Lea. 



Schizostoma pagoda, Lea, Philos. Proc. iv. p. 167, Aug., 1845. Philos. 



Trans., x. p. 67, t. 9, f. 52, 1853. 

 Gyrotoma pagoda. Lea, Chenu, Manuel, i. f. 2020. Binney, Check List, 



No. 327. Brot, List, p. 27. 



16. S. pyramidatum, Shuttleworth.** 



Gyrotoma pyramidatum, Shuttleworth, Mitt. Bern. Nat. Gesell., No. 50, p. 88, 

 July 22, 1845. BiOney, Check List, No. 329. Brot, List, p. 27. 



17. S. Wetumpka e n se. Lea. 



Schizostoma Wetumpkaense, Lea, Proc."Acad. Nat. Sci., p. 187, May, 1860. 



Jour. Acad. Nat. Sci., v. pt. 3, t. 35, f. 56, Mar., 1863. Obs. ix. p. 73. 

 Gyrotoma Wetumpkaensis, Lea, Binnev, Check List, No. 336. Brot, List, 



p. 28. 

 Melatoma Wetumpkaense, Lea, Reeve, Monog. t. 3, f. 17. 



* I hiive not seen this species. 



t Typographical error. 



I llaviug examiued many specimens of hulbosum and ovalis, I find no difference of specific 

 weight. 



§1 have not seen this species. 



I -More inflated, heavier, much lighter in color, not so strongly striated, and with narrower 

 bands than S. glohosuiii, Auth. In a very fine specimeQ before me, the body whorl is disposed to 

 be tubercular.' lielow the suture. 



1[ Mr. Reive fij;ines two distinct species for this shell; his fig. 1 a. is S. Wctumpko.ense, Lea, and 

 fig. 1 b. is i'. liuddii. Lea. 



**1 have Been no authentic specimens of this species. 



t 



