. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. ZONITES. 117 imibilicMs nono, ])iit tho umbilical ri'iijion is indcntofl. Greater diameter 5, lesser -U mill.; heiglit, 2\ mill. Jleiix indrnUita, Say, Journ. Acad, II. 372 (1822) ; Binney's cd., 24. — Binney, Bost. .louni. Nat. llisl., 111. llf., IM. XXII. Vv^. 3 (1840); Terr. Moll., II. 242, ri. XXIX. Fig. 2. — DkKay, N. Y. Moll., 31, PI. III. Fi«. 26 (1843).— Could, Invert., 181, Fig. 109 (1841). — Adamh, Vt. Moll., IGO (1842).— Chemnitz, 2d ed., I. 21, Bl. XXXIV. Figs. 12-15. — Pfkiffer, Men. Hel. Viv., I
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. ZONITES. 117 imibilicMs nono, ])iit tho umbilical ri'iijion is indcntofl. Greater diameter 5, lesser -U mill.; heiglit, 2\ mill. Jleiix indrnUita, Say, Journ. Acad, II. 372 (1822) ; Binney's cd., 24. — Binney, Bost. .louni. Nat. llisl., 111. llf., IM. XXII. Vv^. 3 (1840); Terr. Moll., II. 242, ri. XXIX. Fig. 2. — DkKay, N. Y. Moll., 31, PI. III. Fi«. 26 (1843).— Could, Invert., 181, Fig. 109 (1841). — Adamh, Vt. Moll., IGO (1842).— Chemnitz, 2d ed., I. 21, Bl. XXXIV. Figs. 12-15. — Pfkiffer, Men. Hel. Viv., I. 59.— Reeve, Con. Icon., 730 (1852).—W. G. Binney, Terr. Moll., IV. 119.—Mouse, Amer. Nat., I. 413, Fig. 28 (1867). Hyalina indcntata, Mouse, Journ. Portl. Soc, 1. 12, Fig. 21, PI. II. Fig. 11 ; PI. V. Fig. 22 (1864). — Tryon, Amor. Journ. Conch., II. 246, 411 (1866). — W. Ct. Binney, L. & Sh., I. 35, Fig. 45 (1869). —Gould and Binney, Invert, of Mass., cd. 2, p. 398 (1870). Inhabits all of the Eastern Province, having been found from Canada to Texas, and from Dakota to Florida. Also the Central Province, having been * found in Utah, and I doubt not its eventually being found also over the Pacific Province, especially on the mountains. It is also said to occur in St. Domingo and Porto Rico. Animal bluish-black on the upper parts; margin and posterior extremity lighter. A distinct caudal mucus pore. A variety with an open umbilicus is sometimes found (Fig. 33). Jaw somewhat arcuate, long, narrow, ends somewhat attenuated, ^^^ pointed ; concave margin smooth, with a slightly developed, broad , , median projection. Lingual membrane very broad, with 53 rows of 79 teeth each (39—1—39) ; another membrane had 38—1—38, also with 3 per- fect laterals; centrals tricuspid, the median cusp very large and longer than the base of attachment; laterals 3 only on each . Z. indentatus, Side, bicuspid, arranged in a straight transverse row; marginals v
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