69 



Anculosa trilineata, Say, DeKay, Moll. N. Y., p. 100. Wheatley, Cat. Shells 

 U. S., p. 27. Jay, Cat. Shells, 3d Edit., p. 62. 



Anculotus trilineatus, "Say, Jay, Cat., 4th Edit.* p. 276. Reeve, Monog. An- 

 culotus, t. 5, f. 4L b. 



Leptoxis trilineafa, Say, Haldeman, Monog. Leptoxis, p. 5, t. 5, f. . Bin- 

 ney, Check List, No. 3S9. Brot, List, p. 26. 



Variety. 



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

 X viii.p. 172, t. 5,f. 19. Obs. ii. p. 12. DeKay, Moll. N. Y., p. 95. 



Wheatley, Cat. Shells U. S., p. 27. Binney, Check List, No. 292. Cat- 

 low, Conch. Nomenc. p. 189. 



13. A. s u b g 1 o b o s a, Say. 



Melania subglobosa, Say, Journ. Acad. Nat. Scd. v. p. 128, Sept. 1825. Bin- 

 ney's edit. p. 116. Binney, Check List, No. 254. Catlow. Conch. No- 

 menc. p. 188. Jay, Cat. 3d Edit., p. 62. 



Anculotus subqlobosus, Say, Conrad, New Fresh- Water Shells, p. 60, t. 8, f. 



14. DeKay, Moll. N. Y., p. 103. Reeve, Monog. Anculotus, t. 1, f. 10. 

 Jay, Cat. 4th Edit., p. 276. 



Anculosa subglobosa, Say, Wheatley, Cat. Shells U. S., p. 28. 



Leptoxis subglobosa, Say, Haldeman, Monog. p. 3, t. 2, f. 4058. Chenu, 



Manuel de Conch/1, i. f. 204042. Binney, Check List, No. 387. Brot, 



List, p. 25. 



Melania subglobosa, Lea, Troost, Cat. Shells Tenn., p. 42. 

 Anculosa gibbota, Philos. Proc. ii. p. 34, Apr. 1841. Philos. Trans, ix. p. 



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

 Anculotus gibbosus, Lea. Reeve, Mono":. Anculotus, t. 1, f. 3. 

 Leptoxis gibbosa r Lea, Biuney, Check List, No. 361. Brot, List, p. -". 

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



viii. p. 174, t. 5, f. 22. Obs. iii. p. 12. DeKay, Moll. N Y., p. 95. 

 Troost, Cat. Shells, Tennessee. Wheatley, Cat. Shells U. S., p. 25. 

 Binney, Check List, No. 126. Catlow, Couch. Nomenc. p. 187. 



Variety. 



Anculosa tintinnabulum\, Lea, Philos. Proc. iv. p. 167, Aug. 1845. Philos. 



Trans, x. p. 67, t. 9, f. 51. Obs. iv. p. 67. 



Anculotus tintinnabulum, Lea, Reeve, Monog. Anculotus, t. 2, f. 13. a, b. ? 

 M-lania rir'/afa, Lea, Philos. Proc. ii. p. 13, Feb. 1841. Philos. Trans. 



viii. p. 175, t. 5, f. 25. Obs. iii. p. . DeKay, Moll. N. Y., p. 95. 



Troost, Cat. Shells Tenn. Binney, Check List, No. 290. Catlow, 



Conch. Nomenc. p. 189. Wheatley, Cat. Shells U. S., p. 27. 



14. A. praerosa, Say. 



Melania prcerosa, Say, Jour. Acad. Nat. Sci. ii. p. 177, Jan. 1824. Binney's 

 Edit., p. 70. Catlow, Conch. Nomenc. p. 188. Sowerby, Conch. Man. 

 f. 314. 



* In treating virMis as a synonym of trilfneata, I agree with the opinions expressed by Messrs. 

 Ilaldeinan, Brot, Binney and Anthony. The two former gentlemen, t'jrether with Dr. Jay. con- 

 M IT c-tstatus, Anthony, and oecidentalis. Lea. as synonyms also. In this opinion I cannot coin- 

 cide. The two species appear to me to be well separate! by the costse of Mr. Anthony's species, 

 and the uniformly smooth surface of trilineatus. Mr. Reeve's figure of trilineatiis is very poor ; 

 the bands are so represented as to appear like ribs. 



It is by no means rer'niri that trilin?ata is an Anculosa.. Its general appearance suggests affini- 

 ties with the Amnicolidse, to which family several small species, hitherto considered to be Ancu- 

 losse, have been recently removed. It differs from all the Ainnicrise, however, in its colored bands. 



Mr. Lea's _!/. >//-,' //, is the Var. B. of Mr. Say's description of trilineata. 



f Juvenile shell. 



1 Distinguished by possessing three brown bands or rows of maculations. It is a beautiful 

 variety. 



Young shell of var. tintinndbulum. 



