03 



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



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



Trans, x. p. 69, t. 9, f. 57, 1853. 

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



8. S. a m p 1 u m, Anthony. 



Gyrotoma ampla, Anthony, Proc. Acad. Nat. Sci., p. 6G, Feb., 1860. Bin- 

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

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



9. S. nuculum, Anthony. 



Mela',omt nucula, Anthony, M3S. Reeve, Monog. t. 3, f. 19, Apr., 1361. 

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



10. S. cy li nd r a ceu m,* Mighels. 



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

 Gyrotoma cylindracea, Miill.,f Binney, Check List, No. 315. 

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



11. S. bulbosum,J Anthony. 



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

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



Melatoma butbosum, 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. curt u m, Mighels. 



Schizostoma curta, Mighels, Bost. Proc. 5. p. 189, Oct., 1844. 

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

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



13. S. glans,|| Lea. 



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



Acad. Nat. Sci., v. pt. 3, t. 35, f. f>2, Mar., 1863. Obs. ix. p. 70. 

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



14. S. sphaericum, Anthony. 



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



15. S. p a g o 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.** 



Gyro'oma pyramidatum, Shuttleworth, Mitt. Bern. Nat. Gesell., No. 50, p. 88, 

 July 22, 1845. Binney, 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, Binney, Check List, No. 336. Brot, List, 



p. 28. 

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



* I have not seen this specie*. 



f Typographical error. 



| Having examined many specimens of lulbosum and ovalis, I find no difference of specific 

 weight. 



1 have not seen this species. 



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

 bands than & glvbosum, Auth. In a very fine specimen before me, the body whorl is disposed to 

 be tuberculate below the suture. 



fl Mr. Reeve figures two distinct species for this shell; his fig. 1 a. is S. Wetumpkaense, Lea. and 

 fig. 1 b. is S. J! udi/ it, Lea. 



** I have seen no authentic specimens of this species. 



