NATURAL SCIENCES OP PHILADELPHIA. 95 



Gyrotoma cylindracea, Mull.,* Binney, Check List, No. 315. 

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



11. S. bulbosum, f Anthony. 



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

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



Melatonia bulbosum, 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,% Mighels. 



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

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

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



13. S. gl a n s,g Lea. 



Schizosioma ylans, 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 ylans, Lea, Binney, Check List, No. 320. Brot, List, p. 27. 



14. S. sphaericum, Anthony. 



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



15. S. p a g o d a, || Lea. 



Schizosioma payoda, Lea, Philos. Proc. iv. p. 167, Aug., 1845. Philos. 



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

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



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



16. S. py ram i datum, ^[ Shuttleworth. 



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

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



17. S. W et umpka e n s e. 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. 

 Melatoma ornata,** Authony, MSS., Reeve, Monog. fig. 11. 

 Melatonia payoda, Lea. Reeve, Monog. fig. 1, a. (not 1 b). 



18. S. A 1 a b a m e n s e, f f Lea. 



Schizosioma Alabamense, Lea, Proc. Acad. Nat. Sci., p. 187, May, 1860. 



Jour. Acad. Nat. Sci., v. pt. 3, t. 35, f. 54. Obs. ix. p. 72. 

 Gyrotoma Alabame'isis, Lea, Binney, Check List, No. 305. Brot, List, No. 27. 



19. S. A n t h o n y i, Reeve. 



* Typographical error. 



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

 weight. 



1 1 have not seen this species. 



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

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

 be tuberculate below the suture. 



|i Mr. Reeve Lguies two distinct species for this shell; his fig. i a. is S. Wetumpkaense, Lea, and 

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



f I hare seen no authentic specimens of this species. 



** Never published by Mr. Anthony, who sent a specimen with label attached, marked " Proc. 

 A. N. S.," to Mr. Reeve. Mr. Keeve, misled by this reference, refers in his description to Anc. 

 ornata, Authouy, and consequently assigns North Carolina as the habitat. No species of Schizos- 

 toma is known to exist out of Coosa Kiver, Alabama. S. ornata is the young of Wetumpkaense. 



tf Mr. Reeve's figure 20, intended for this species, I refer to S. babylonicum, Lea. Alabamense is 

 distinguished from babylonicum by the regularity of its striae. 



1864.] 



