. Bulletin - United States National Museum. Science. 226 A MANUAL OF AMERICAN LAND SHELLS. Eelix gularis, var. /?, PfeifFer, iu Chemnitz, ed. 2, &c. See Z. gularis. Gastrodonla »«jjjj>'essa, Tryon, Am. Journ. Couch., ii, 258 (1866). Zonites supjiressa, W. G. Binney, L. & Sh., i, 293 (1869).—Gould and BiN- NEY, Invert of Mass., ed. 2, 454 (1870). Zonites svppressus, W. G. Binney, Terr. Moll., v, 130. I have considered this as a species of the luterior Eegion, which has passed those limits, ranging into the Northern and Southern Eegions. I have actually received it from New Eng
. Bulletin - United States National Museum. Science. 226 A MANUAL OF AMERICAN LAND SHELLS. Eelix gularis, var. /?, PfeifFer, iu Chemnitz, ed. 2, &c. See Z. gularis. Gastrodonla »«jjjj>'essa, Tryon, Am. Journ. Couch., ii, 258 (1866). Zonites supjiressa, W. G. Binney, L. & Sh., i, 293 (1869).—Gould and BiN- NEY, Invert of Mass., ed. 2, 454 (1870). Zonites svppressus, W. G. Binney, Terr. Moll., v, 130. I have considered this as a species of the luterior Eegion, which has passed those limits, ranging into the Northern and Southern Eegions. I have actually received it from New England to Florida and to Mich- igan. Animal: seep. 223, and Bost. Journ. of Nat. Hist., Ill, Plate XI, Fig. 3. This shell does not correspond exactly with Say's description, but I think it is the same that he described under this name. Having re- ceived, from different localities, suites of them, of different sizes, I notice that the "umbilicus small, orbicular, profound," of Say, exists usually only in young specimens, it being oftener closed in the full- grown shell, but not always so. It*resembles the preceding species, but has one whorl less, is more depressed, and its base is more convex. The tooth in the aperture is sometimes so little prominent as to be hardly visible; at other times there are 3 teeth. The striie of growth are fine and crowded, and seem to be more nearly at right angles with the suture than is usual in other species. Jaw strongly arcuate, ends rounded, concave margin smooth, with Fig. 242. a stout, rouudcd, blunt median iirojectioii. ^^ Z. suppressus (Terr. Moll., Y, Plate III, Fig. J; the mar- Jaw of zonitfs giuals are from near the edge of the membrane) has 30-1- () 30 teeth, with 8 perfect laterals on each side on its lingual membrane. The genitalia are figured by Leidy (/. c.) as iu Z. intertextus (see above). I have already, under Z. ^wiam, pointed out the specific dis- tinction between that species and suppressus, furnished by th
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