63 



7. S. laciniatum, Lea. 



Schizostoma laciniatum, 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. am plu m, Anthony. 



Gyrotoma ampla, Anthony, Proc. Acad. Nat. Sci., p. 66, Feb., 1860. Bin- 

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

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



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



Melatomi nucula, Anthony, M33. Reeve, Mouog. t. 3, f. 19, Apr., 1861. 

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



10. S. cy li ndra ceu m,* Mighels. 



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

 Gyrotoma cylindracea, Miill.,^ Binney, Check List, Xo. 315. 

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



11. S. bulb o sum, J Anthony. 



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

 ney, Check List, Xo. 309. Brot, List, p. 27. 



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



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

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



12. S. curtum, Mighels. 



Sckizostoma curta, Mighels, Bost. Proc. i. p. 189, Oct., 1844. 

 G;jr6toma curta, Mighels, Binney, Check List, Xo. 314. 

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



13. S. glans,|| Lea. 



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



Acad. Xat. Sci., v. pt. 3, t. 35, f. 52, Mar., 1863. Obs. ix. p. 70. 

 Gyrotoma glans, Lea, Binney, Check List, Xo. 320. Brot, List, p. 27. 



14. S. s p h ae r i c u m, Anthony. 



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



15. S. pagoda,^" 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, 



Xo. 327. Brot, List, p. 27. 



16. S. p y r a m i d a t u m, 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. Wet umpka e n se, Lea. 



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



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

 Gyrotoma Wetumpkaensis, Lea,- Binney, Check List, Xo. 336. Brot, List, 



p. 28. 

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



* I have not seen this species. 



t Typographical error. 



j Having examined many specimens of bulbosum and avalis, I find no difference of specific 

 weight. 



1 have not seen this species. 



inflate! heavier, much lighter in color, not so strongly striated, and with narrower 

 bands than S. globosum, Anth. In a very fine specimen before me, the body whorl is disposed to 

 be tuberculate below the suture. 



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

 fig. 1 b. is S. Buddii, Lea. 



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



