188 LAND AND FRESH- WATER SHELLS OF N. A. [PART T. 



Helix virginea, Wood, Ind. Suppl. p. 21, f. 19=3/e?anm virginica. 

 Helix urceus, Muller, Dillwyn, Cat. II, dlS = Ampullaria. 

 Helix fuscala, Born, Mus. Virid. 1780, 390, pi. xvi, f. 17. Virginia. 

 Helix irrorata, Say= H. lactea, Muller. See Terr. Moll. IV, 124. Does 



not now exist in America. 

 Helix rasiellum, Beck, Ind. 8. Am. s. 

 Helix personate!, Lamarck, Ohio. Jay, Cat. ed. 2, 36, 183G, and Villa, 



Disp. 14, 1841. 

 Helix punctata, Dillwyn, Cat. II, 899, is from Martinique, not Virginia. 

 Helix ruderata, Stdder, Anthony, Ohio Cat. no. ol=siriatella? 

 Helix variabilis, Drap., North. America. See Forbes, Brit. Ass. Rep. 



1840, 145 ; see also Bost. Journ. Nat. Hist. Ill, 489 ; Fekcssac, Tabl. 



Syst. 48. 

 Helix (^Eunj crater a) lineolata, Lam., is erroneously quoted from North 



America by Beck (Index, 45). 

 Helix stcenstriipii, MoRCH. Greenland. I can find no description of it. 



Vide Terr. Moll. IV, 117. 

 Helix subcarinata, Wood (Index, Suppl. pi. vii, f. 13) = Leptoxis. 

 Helix dissimilis. Wood (Index, Suppl. pi. vii, f. 18) = Melantho decisa. 

 Helix decisa, Wood (Index, Suppl. _pl. vii, f. 19) = Lioplax subcarinata. 

 Helix bidentifera, Phillips (Proc. Acal. Nat. Sci. Philad. I, 27, 1841), 



North Carolina = i/^. barbula, Charp., of Portugal (Jt. c. p. 133). 

 Helix palustris, Rackett. See Limnaa palusti-is. 

 Helix angulata, Rackett. See Planorbis bicarinatus. 

 Helix albella, Dillwyn, Cat. II, 890. Virginia. 



Fossil Species of Helix. 



Dr. Meek furnishes the following list of fossil species : — 



Helix leidyi. Hall & Meek, Am. Ac Arts and Sci. Boston, V, 394, new ser. 



Helix amplcxus. Meek & Hayden, Proc. Acad. Nat. Sci. Philad. 1861,431 



= Planorbis amplexus, M. & II. Proc. Acad. Nat. Sci. Philad. 1857, 135. 

 Helix spatiosa,U. kU. (.yacrocijcl is), " " " 1861,446. 



Helix vitrina, " " " " " 1861,447. 



Helix nebrasce7icis, " " " " " 1861, 431 



= //. occidentalis, M. & H. I. c. 1857, 135 (non Recluz, 1845). 

 Helix vetusta (nom. trans, ob. //. v. Mor. & Dr. 1857, J. C. (2), II, 153), 



M. & H. Proc. Acad. Nat. Sci. Philad. 1860, 431 = £?. vilrinoides, 



M. & H. I. c. 1857, 135 (non Desiiayes, 1830). 

 Helix evansi, M. & H. I. c. 1860, 175, 

 Helix obliqua, M. & H. /. c. 1857, 134. 



ErCALODirMl Crosse & Fischer. 



[The generic position of the following species is unceriain. 

 See Bland, Ann. N. Y. Lye. IX.] 



