69 



Ancu/om trilineaia, Say, DeKay, Moll. N. Y., p. 100. Wheatley, Cat. Shells 



U. S., p. 27. Jay, Cat. Shells, 3d E.lit., p. (i2. 

 Anculotux trilineatus, Say, Jay, Cat., 4th Edit., p. 270. Reeve, Moiiog. An- 



culotus, t. 5, f. 41, b. 

 Lf'ptoxis triliiieata. Say, Haldeman, Monog. Lcptoxis, p. .5, t. 5, f. — . Bin- 



ney, Check List, No. 3s9. Lrot, List, p. 2(i. 



Varietii. 



Melania ririrliti* Lea, Philos. Proc. ii. p. 12, Feb. 1S41. Philos. Traus., 

 Tiii.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. 29_;. Cat- 

 low, Conch. Nomenc. p. 189. 



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



Melania suhglobo>:a, Say, Journ. Acad. Nat. Sci. 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 siib'/lobosim, Suv, Conrad, New Fiesh-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 suhf/l' bnsa, Say, Wheatley, Cat. Shells U. S., p. 28. 



Leptoxls subijlobosa. Say, Haldeman, Monog. p. 3, t. 2, f. 40 — 58. Chenn, 



Manuel' de Conchyh i. f. 2040—42. Binney, Check Li^t, No. 387. Brot, 



List, p. 25. 

 Melania sub(/lobosa. Lea, Troost, Cat. Shells Tenn., p. 42. 

 Anculosa gibbosa, 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, Monog, Anculotus, t, 1, f, 3, 

 Leptoxis gibbosa, Lea, Binney, Check List, No. 361, Brot, List, p. 25, 

 Melania glohula,-\ 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, Conch, Nomenc, p, 187, 



Variety. 



Anculosa tintinnabuJumX, Lea, Philos, Proc, iv, p. 1G7, 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. ? 

 Mslania viri/afa,§ Lea, Philos. Proc. ii. p. 13, Feb. 1841, Philos. Trans, 



viii, p,'l75, t, 5, f. 25. Obs. iii. p. . DeKay, Moll. N, Y,, p. 95. 



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



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



14. A, praerosa, Say, 



Melania prarosa, 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 treatini? viridis as a eynonyni of trilineaia, T agree with the opinions expressed by Mes.«rs. 

 Haldeman, Brot, Binney and Anthony. The two former gentlemen, t^Rether with Dr. Jay, con- 

 (■ider cnstulus. Anthony, and occidentalis. Lea, as synonyms also. In this opinion I cannot coin- 

 cide. The two species apj)ear to me to he well separated by the eostae of Mr. Anthony's species, 

 and the uniformly smootli surface of trilirwatu.i. Mr. Reeve's figure of triline.atus is very poor ; 

 the bands are so represented as to appear like ribs. 



It is by no means cerr;iia that trilincuta is an Anculosa. Its general appearance suggests afRni- 

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

 InsiP, have been recently removed. It differs from all Ihe Amnicolx. however, in its colored bands. 



Mr. Lea's M. viridis is the Var. B. of Mr. Say's description of trilincata. 



t .Tuvenile shell. 



t Distinguished by pos.sossing three brown bands or rows of maculatious. It is a beautiful 

 variety. 



§ ioung shell of var. tintinnabulum. 



