. Bulletin - United States National Museum. Science. EASTERN PROVINCE INTERIOR REGION SPECIES. 341 iSuccinea aiirea, Lea, Tians. Am. Phil. Soc, ix, 4; Obs., iv, 4 (1844); Proc, 1841, ii, 32.—Pfeiffkp, Mon. Hel. Viv., ii, 325.—Binney, Terr. Moll., ii, 76, pi. ixvii, c, fig. 2.—W. G. BiNNEY, Terr. Moll., iv, 37; v, 222 ; L. & Sh., i, 264 (1869).—TUYON, Am. Jouru, Conch., ii, 241 (1^66). Succinea ovliUs, var., Anthony, Shells of Ohio (1843), No. ;), no clescr. A species of tbe Interior Eegion, but restricted, as far as yet kDown to Ohio. Animal not observed. This siiuill species
. Bulletin - United States National Museum. Science. EASTERN PROVINCE INTERIOR REGION SPECIES. 341 iSuccinea aiirea, Lea, Tians. Am. Phil. Soc, ix, 4; Obs., iv, 4 (1844); Proc, 1841, ii, 32.—Pfeiffkp, Mon. Hel. Viv., ii, 325.—Binney, Terr. Moll., ii, 76, pi. ixvii, c, fig. 2.—W. G. BiNNEY, Terr. Moll., iv, 37; v, 222 ; L. & Sh., i, 264 (1869).—TUYON, Am. Jouru, Conch., ii, 241 (1^66). Succinea ovliUs, var., Anthony, Shells of Ohio (1843), No. ;), no clescr. A species of tbe Interior Eegion, but restricted, as far as yet kDown to Ohio. Animal not observed. This siiuill species is about the size of S. avara, but it is less ventri- coseiu form and of a more vitreous structure and more yellow cast of color. The aperture, especially, is far less rounded; indeed, it is more narrow than in any other American species. Succinea obiiqiia, Say. Shell ovate, pale green, yellowish-green, amber colored, or cinereous, very thin and fragile, pellucid, sometimes roseate at apex; fig. nyi. periostraca shining, minutely wrinkled or striated; whorls rather moie than 3, the last very large and much ex- panded and more or !ess oblique; si)ire very small, not prominent nor pointed; suture distinct, impressed; aper- lure, oval, large, and expanded, more or less oblique; colii- mellar margin with a slight testaceous glazing; columella thin, sharp, narrowed; peristome thin, its edge blunted by the reflec- tion of the periostraca. Greatest length, 25"""; ordinary length, 18™". Succinea obliqua, Say, Long's Exped., ii, 260, pi. xv, fig. 7 (1824); Binney's ed., 32, pi. ixxiv, fig. 7.—Adams, Shells of Vermont, 156, with fig. (1842).—De Kay, N. Y. Moll., 53, pi. IV, fig. 53 (1843).—Pfeiffer, Mon. Hel. Viv., iii, 15 ; in Chemnitz, ed. 2, 47, pi. v, figs. 1, 2 (1.^54).—Binney, Terr. Moll., ii, 69, pi. Ixvii, T), fig. 3, excl. syn., Tottciiiaiui.—W. G. Binney, Terr. Moll., iv, 35; v, 424 ; L. & Sh., i, 265 (1869).—Leidy, T. M. U.
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