1. Nodulous species. 



1. A. Anthonyi, Budd. 



Anculosa Anthonyi, Budd, Redfield, Ann. Lye. X. Hist., vi. p. 130, t. 1, f. 6, 



Apr., 1854. 

 Leptoxis Anthonyi, (Budd) Redfield, Brot, List, p. 23. Binney, Check List, 



No. 341. 

 Anculotus Anthonyi, (Budd) Redfield, Reeve, Monog. Anc. t. 2, f. 17. 



2. A. p 1 i c a t a, Conrad. 



Anculotus plicatus, Conrad, New Fresh -water Shells, p. 61, t. 8, f. 18, 1834. 



DeKay, Moll. N. York, p. 103. Jay, Catalogue. 4th Edit., p. 276. Reeve, 



Monog. t. 3, f. 22. 



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

 Leptoxis plicata, Conrad, Binney, Check List, No. 379. Haldeman, Monog. 



Lept., p. 3, t. 2, f. 3539. 

 Anculosa bella, Lea, Philos. Proc., ii. p. 83, Oct., 1841. Wheatley, Cat. Shells 



U. S., p. 28. 

 Anculosa tuberculata, Lea, Philos. Proc., ii. p. 83, Oct.. 1841. Phil. Trans. , 



ix. p. 21. Obs., iv. p. 21. Wheatley, Cat. Shells U. S., p. 28. Binney, 



Check List, No. 392. 

 Anculotus Smaragdinus, Reeve, Monog. t. 3, f. 23, Apr., 1860. 



2. Sulcate species. 



3. A. Sh o w alt e r ii, Lea. 



Anculosa Showalterii, Lea, Proc. Acad. Nat. Sci., p. 93, 1860. Jour. Acad. 



Nat. Sci., 2d Ser., v. pt. 3, p. 255, t. 35, f. 62, Mar., 1863. Obs., ix. p. 



77, t. 35, f. 62. 



Leptoxis Showalterii, Lea, Binney, Check List, No. 385. Brot, List, p. 25. 

 Anculotus sulcosus, Anthony, MSS., Reeve, Monog. Anculotus, t. 6, f. 44, 



Apr., 1861. 

 Leptoxis sulcosa, Anthony, Brot, List, p. 26. 



4. A. c a n a 1 i f e r a, Anthony. 



Anculosa canalifera, Anthony, Proc. Acad. Nat. Sci., p. 68, Feb., 1860. 

 Anculotus canaliferus, Anthony, Reeve, Monog. Anculotus, t. 5, f. 39. 

 Leptoxis canalifera, Anthony, Binney, Check List. No. 345. Brot, List, p. 24. 



3. Striate species. 



5. A. 1 i 1 1 o r i n a, Haldeman. 



Anculosa littorina, Haldeman, Spec. Number of Monog. Cover of No. 1, Mo- 

 nog., July, 1840. 



Leptoxis littorina, Haldeman, Monog. Lept., p. 4, t. 4. f. 110. Binney, Check 

 List, No. 368. . Brot. List, p. 24. 



Melania pilula, Lea, Philos. Proc., ii. p. 15, Feb., 1841. Philos. Trans., viii. 

 p. 186, t. 6, f. 50. Obs., iii. p. 24, t. 6, f. 50. DeKay, Moll. N. York, 

 p. 99. Troost, Cat. Moll. Tennessee. Wheatley, Cat. Shells U. S., p. 26. 

 Binney, Check List, No. 204. Catlow, Conch. Nomenc., p. 188. 



6. A. c o s t a t a,* Anthony. 



Anculotus costatus, Anthony, Bost. Jour. Nat. Hist., iii. p. 278, t. 3, f. 1, Jan., 

 1840. DeKay, Moll. N. York, p. 102, t. 7, f. 139. Reeve, Monog. Ancu- 

 lotus, t. 5, f. 41. 



Anculosa costata, Anthony, List of Shells of Cincinnati, 2d Edit. Wheatley, 

 Cat. Shells U. S., p. 28. 



Leptoxis costata, Anthony, Binney, Check List, No. 349. 



Melania occidentalis, Lea, Philos, Proc., ii. p. 12, Feb., 1841. Philos. Trans., 

 viii. p. 172, t. 5, f. 20. Obs., iii. p. 10, t. 5, f. 20. DeKay, Moll. N. Y., 



* M. occidentalis, Lea, is the mature form, and costata the young, of this species. They are not 

 identical with trilineata, Say, as supposed by Prof. Haldeman. The latter species is not found in 

 the upper Ohio, where costata abounds. 



