68 



Anculosa dentaia, Lea, Philos Proc. ii. p. 34, Apr. 1841. 



Leptoxis dentaia, Lea, Binney, Check List, No. 353. 



Anculosa (Mudalia) affinis, Haldeman, Monog. Limniades, Cover of No. 3, 



Mar, 13tli, 1841. ' 

 Anculolus affinis, Haldeman, Reeve, Monog. Anculotus, t. 6, f. 53. 

 Leptoxis aj/inis, Haldeman, Binney, Check List, No. 3oi. Brot, List, p. 23. 



9. A. d i 1 a t a t a,* Conrad. 



Melania dilatata, Conrad, New Fresh-AVater Shells, Appendix, p. 6, t. 9^ f. 5, 



1834. 

 Anculotus dilatatus, Conrad, Reeve, Monog. Anculotus, t. 5, f. 38. 

 Anculosa dilatata, Conrad, Am. Journ. Science, n. s., i. p. 407. Hanley, 



Conch. Misc. t. 5, f. 38. 

 3fudalia dilatata, Conrad, Chenu, Manuel de Conchyl. i. f. 2043 — 5. 

 Leptoxis dilatata, Conrad, Haldeman, Monog. Leptoxis, p. 4, t. 4, f. Ill — 



120. Binney, Check List, No. 354. Brot, List, p. 24. 

 Melania Rogersii,-f Conrad, New Fresh- Water Shells, Appendix, p. 7, t. 9, 



f. 7, 1834. Jay, Cat., 4th Edit., p. 274. 

 Anculotus Rogersii, Conrad, Reeve, Monog. Anculotus, t. 4, f. 28. 

 Leptoxis Rogersii, Conrad, Binney, Check List, No. 382. 

 Anculotus carinatus, Anthony, Bost. Journ. Nat. Hist., iii. pt. 3, p. 394, t. 3, 



f. 5, July, 1840. Reeve, Monog. Anculotus, t. 5, f. 42. 

 Leptoxis corinala, Anthony, Binney, Check List, No. 342. 

 Anculotus Kirtlandianus, Anthony, Bost. Journ. Nat. Hist., iii. pt. 3, p. 



295, t. 3, f. 4, July, 1840. Jay, Cat., 4th Edit., p. 276. Reeve, Monog. 



Anculotus, t. 4, f. 29. 

 Anculosa Kirtlandiana, Haldeman, Wheatley, Cat. Shells U. S., p. 28, 

 Melaiiia injlata, Lea, Philos. Trans, vi. p. 17, t. 23, f. 98. Obs. ii. p. 17. 



Wheatley, Cat. Shells U. S., p. 25. Binney, Check List, No. 147. 

 Leptoxis rapo'formis, Haldeman, Monog. Leptoxis, p. 4, t. 4, f. 123. Brot, 



List, p. 25, , 



10, A. corpulent a, J Anthony. 



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

 Anculotus corpulentus, Anthony, Reeve, Monog. Anculotus, t. 1, f. 9. 

 Leptoxis corpulenta, Anthony, Binney, Check List, No. 348. Brot, List, 

 p. 24. 



11, A. ra e 1 a n i d e s, Conrad. 



Anculotus melanoides, Conrad. New Fresh-Water Shells, p. 64, t. 8, f. 19, 

 1834. DeKay, Moll. N. Y., p. 102. Wheatley, Cat. Shells U. S., p. 26, 

 Reeve, Monog. Anculotus, t. 6, f. 48. 



Leptoxis melanoides, Conrad, Haldeman, Monog. Leptoxis, p. 5, t. 5, f. 145, 

 146. Binney, Check List, No. 369. 



Anculosa (Mudalia) turgida, Haldeman, Supplement to No. 1, Monog. Lim- 

 niades, Oct. 1840. Wheatley, Cat. Shells U. S., p. 28. 



Leptoxis turgida, Haldeman, Monog. Leptoxis, p. 5, t. 5, f. 151. Binney, 

 Check List, No. 393. Brot, List, p. 26. 



5, Shell smooth, globose, or flattened above. 



12. A. t r i 1 i n e a t a. Say. 



Melania trUineata, Say, New Harmony Dissem., No. 18, p. 227, Sept. 9, 

 1829. Say's Reprint, p. 19, 1840. Binney's Edition, p. 144. Catlow, 

 Conch. Nomenc. p. 189. 



* I had at first \inltecl this to dissimilis, and I am yet doubtful whether it is really distinct from 

 that protean ^ijecies. 



I Young of dihitata. In placing all these sperific names together as synonyms, I am sustained 

 by the decisions uf Mr. Lea, (Philos. Trans. Tiii. p. 171,) llaldeman, Monog. Leptoxis, and Anthony, 

 JProc. Uost. Soc. Nut. Hist. i. p. 5. 



X Most nearly allied to the buavy, obeoletely angulated form of dissimilis. 



