70 



Anculotus prcerosus, Say, Conrad, New Frosh-Water Shells, p. 59, t. 8, f. 13. 



Jay, Cat. 4th Edit., p. 276. Reeve, Monog. Anculotus, t. 2, f. 15, 16. 

 Anculotus prtemorsa, Say, Woodward, Manuel, t. 8, f. 28. 

 Anculosa prcerosa, Say, Ravenel, Cat. p. 11. Wheatley, Cat. Shells U. S., 



p 28. Anthony, List, 1st and 2nd Elits. Kirtland, Rep. Zool. Ohio, 



p. 174. DeKay, Moll. N. Y., p. 103. 

 Leptoxis prtzrosa, Say, Haldeman, Monog. Lept. p. 2, t. 1, f. 118. Chenu, 



Manuel, i. f. 2*03034. Binney, Check List, No. 380. Brot, List, 



p. 25. 

 Melania angulosa*, Menke, Svn. Meth., 1st Edit., p. 81, 1828- 2nd Edit. 



p. 135, 1830. Blimey, Check List, No. 15. 

 Melania cruentata, Menke, Syn. Meth., 1st Edit., p. 80, 1828. 2nd Edit. 



p. 134, 1830. 

 Melonia ovularis, Menke, Syn. Meth., 1st Edit., p. 80. 2nd Edit. p. 134. 



Binney, Check List, No. 194. 

 Melanopsis neritiformis, Deshayes, Eneyc. Meth. Vers. ii. p. 438, No. 14. 



Aniin. Sans. Vert., 2nd Edit., viii. p. 492, 1838. 

 Anculotus angulatus,^ Conrad, New Fresh- Water Shells, p. 60, t. 8, f. 15, 



1834. Dekay, Moll. N. Y., p. 102. Wheatley, Cat. Shells U. S., p. 27. 



Reeve, Monog. Anculotus, t. 6, f. 51. Jay, Cat. Shells, 4th Edit., p. 



276. 



Leptoxis angulata, Conrad, Binney, Check List, No. 340. 

 Melania Cincinnaliensis$, Lea, Philos. Proc. i. p. 66, Dec. 1838. Philos. 



Trans, viii. p. 190, t. 6, f. 58. Obs. iii. p. 28. Jay, Cat. 4th Edit., p. 



273. Catlow, Conch. Nomenc. p. 18(3. 

 Anculotus Cincinnatiensis, Lea. DeKay, Moll. N. Y., p. 95. Troost, Cat. 



Shells Tenn. 

 Leptoxis Cincinnaliensis, Lea, Binney, Check List, No. 346. 



15. A. crass a, Haldeman. 



Anculosa crassa, Haldeman, Monog. Limniades, No. 4, p. 3 of Cover, Oct. 



5, 1841. 

 Anculotus crassus, Haldeman, Jay, Cat., 4th Edit., p. 276. Reeve, Monog. 



Anculotus, t. 2, f. 14. 

 Leptoxis crassa, Haldeman, Monog. Lept. p. 2, t. 1, f. 19 23. Binney, 



Check List, No. 350. Brot, List, p. 24. 



16. A. t x n 1 a t a, $ Conrad, 



Anculotus tceniatus, Conrad, New Fresh- Water Shells, p. 63, 1834. DeKay, 

 Moll. N. Y., p. 103. Jay, Cat., 4th Edit., p. 276. Reeve, Monog. An- 

 culotus, t. 6, f. 50, non t. 2, f. 15. 



Anculosa tceniata, Conrad, Wheatley, Cat. Shells U. S., p. 28. 



Leptoxis tceniata, Conrad, Haldeman, Monog. Leptoxis, t. 3, f. 71 73. Bin- 

 ney, Check List, No. 388. Brot, List, p. 26. 



Anculosa cooscensis, || Lea, Proc. Acad, Nat. Sci. p. 54,1861. Jour. Acad. 

 Nat. Sci. v. pt.3, p. 257, t. 30, f. 65, Mar. 1863. Obs. ix. p. 76. 



. 17. A. Troostiana, Lea, 



Anculosa Troostiana, Lea, Philos. Proc. ii. p. 34. Philos. Trans, ix. p. 15. 



Obs. iv. p. 15. Wheatley, Cat. Shells U. S., p. 28. 

 Anculotus Troostianus, Lea, Reeve, Monog. Anculotus, t. 4, f. 30. 

 Leptoxis Troostiana, Lea, Haldemau, Monog. Leptoxis, p. 4, t. 3, f. 81. 



Binney, Check List, No. 391. Brot, List, p. 26. 



* The various descriptions by Menke and Deshayes all certainly belong to this species, as Messrs. 

 Haldeman and Anthony long ago decided. 



t This is a half grown shell which still retains the angle on the periphery in Alabama, while, in 

 specimens of more northern location, it is only visible in the quite young. 

 J Undoubtedly the quite young shell of prxrosa. 



2 Intermediate in form between rubiginoxa and prxrosa, and distinguished by its elongated body 

 whorl, concavely flattened around its upper half. 



|| Young Shell. 



