ANCULOSA. 



395 



The following opinions have been advanced concerning the 

 synonj'ray of this species : — 



Professor Haldeman, Mr. Reeve and Dr. Brot concur in con- 

 sidering nigrescens a sj^nonyme of cUssimilis. The first and 

 last named gentlemen write carinata. Lea, and Nicklinidna, 

 Lea?, s3mon3^mes of A. variabilis^ Lea (Nickliniana is a true 

 Goniohasis, G. W. T., Jr.). Messrs. Jay, Haldeman and Brot 

 make dentatus^ Couthuoy, a synonyme of monodontoides, Con. 

 Professor Haldeman makes dentata, Lea, to be the same as 

 Couthuoy's species. 



8. A. dilatata, Conrad. 



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



1S34. 

 Anculotus dilatatus, Conrad, Ree\'e, Monog. Anculotas. t. 5, f. 38. 

 Anculosa dilatata, CONRAD, Am. Jour. Sci., n. s., i, p. 407. Hanlet, Conch. Misc., 



t. 5, f. 38. 

 Mtidalia dilatata, Conrad, Cheku, Manuel de Conchyl., i, f. 2043-5. 

 Kitocris dilatata, Conrad, Adams. Genera, i, p. 308. 

 Leptoxis dilatata, Conrad, Haldeman', Monog. Leptoxis, p. 4, t. 4, f. 111-120. 



BiNNEY, Check List, No. 35t. Bkot, List, p. 24. Chexu, Manuel, i, f. 2043-5. 

 Melania liogersii, Conrad, New Fresh- Water Shells, Appendix, p. 7, t. 9, f. 7, 1834. 



Jay, Cat., 4th edit., p. 274. 

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

 Leptoxis liogersii, Conrad, Binxey, Check List, No. 383. 

 Niiocris liogersii, Conrad, Adajis, Genera, i, p. 308. 

 Anculotus carinatus, Anthony, Bost. Jour. Nat. Hist., iii, pt. 3, p. 394, t. 3, f. 5, July, 



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

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

 Anculotus Kirtlandianus, Anthony', Bost. Jour. Nat. Hist., iii, pt. 3, p. 295, t. 3, f. 4, 



July, 1810. Jay, Cat., 4th edit., p. 27(5. Reeve, Monog. Anculotus, t. 4, f. 29. 

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

 Kitocris Kirtlandianus, Anthony, Adams, Genera, i, p. 308. 

 Melania inflata. Lea, Philos. Trans., vi, p. 17, t. 23, f. 98. Obs., ii, p. 17. Wheatley, 



Cat. Sheila U. S., i).25. Binney, Check List, No. 147. Troschel; Archiv lur 



Naturge.sch., ii. p. 22f). 

 Kitocris injlatus. Lea, Adams, Genera, i. ^^S- 776. Fig. 775. Fig. 774. 



p. 308. 

 Leptoxis rapceformis, Haldeman, Monog. 



Leptoxis, p. 4, t. 4, f. 123. BROT, List, 



p. 25. 



Melania dilatata. — Shell subovate, 

 veutricose; spire conical; whorls 

 convex ; body-whorl angular in the middle ; aperture subovate, half 

 the length of the shell. 



Habitat. — Inhabits rivers in Munroe County, Virginia; Mr. William 

 B. Rogers.— Conrad. 



