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. & Fr.-W. Sh., i, 

 264 (1869).— TUYON, Am. Jouru, Conch., ii, 241 (1^66). 



Succinea ovliUs, var., Anthony, Shells of Ohio (1843), No. 4."), 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. & Fr.-W. Sh., i, 265 (1869).— Leidy, T. M. U. S., i, 258, pi. xiii,figs. 1-3 

 (1851), anat. — Tryon, Am. Journ. Conch., ii 232 (1866). — Goitld and Bin- 

 ney, Inv. of Mass., ed. 2, 447 (1870). 



Succinea oralis, Say, Jouru. Acad. Nat. Sci. Phila., i, 15 (1817); Nich. Encycl., ed. 

 3 (1819); Binney's ed., 8.— Adams, Shells of Vermont, 156 (1842).— De- 

 shayes, in Encycl. M^th., ii, 20 (1830); Fer., Hist., 1. c, ii, 139 (excl. syn. 

 Gould) ; in Lam., ed. 2, viii, 319. — Pfeiffer, Mon. Hel. Viv., ii, 524 ; iii, 15 

 (excl. syn. Gould) ; in Chemnitz, ed. 2, 48, pi. v, figs. 3,4. 



Succinea Jineula, De Kay, N. Y. Moll., 53, pi. iv, fig. 51 (olim), 1843. 



Succinea campestris, of all American authors except Say. — GouLD, Invert., 195, fig. 

 126 (1841).— De Kay, N. Y. Moll., .54, pi. iv, fig. 54 (1843). 



Succinea Greerii, Tryon, Am. Journ. Conch., ii, 232, pi. ii, fig. 8 (1866). 



A Post-Pliocene species, now found in the Northern and Interior 

 Eegion s, from Gaspe to Georgia and from the Red River of the North 

 to Arkansas, 



