SUCCINEA. 



2C5 



Fig. 474. 



Succinea groeillandica. Beck.— Shell elongated, rather heavy, 

 lightly wrinkled, of a light horn-color mixed with wliite ; spire scalariform, 

 bulbous ; whirls four, the penultimate quite convex, the last 

 equalling two-thirds the length of the shell ; columella re- 

 ceding and narrowed, covered with a white callus ; aperture 

 oval ; peristome simple, the right margin covered. Greatest 

 lengths, breadth SJ mill. ; length of the aperture 5h, breadth Sj. 



Succinea groenJandica, Beck, Ind. — Pfeiffek, Mod. Hel. Viv. 

 II, 529.— MiiLLER, Ind. Moll. Gr. 4 (1842).— W. G. Bin- 

 NEY, Terr. Moll. IV, 38, pi. Ixxx, f. 4.— Tkyo.n, Am. Journ. 

 Conch. II, 234, pl. ii, f. 13 (18G(J). 



Greenland. 



yroen- 

 landica. 



Fig. 475. 



Succinea obliqua, Sat. — Sliell ovate, pale green, yellowish-green, 

 amber-colored, or cinereous, very thin and fragile, pellucid, sometimes 

 roseate at apex ; periostraca shining, minutely wrinkled or striated ; whirls 

 rather more than three, the last very large, and much ex- 

 panded, and more or less oblique ; spire very small, not 

 prominent nor pointed ; suture distinct, impressed ; aper- 

 ture oval, large and expanded, more or less oblique ; colu- 

 mellar margin with a slight testaceous glazing ; columella 

 thin, sharp, narrowed; periitome thin, its edge blunted by 

 the reflection of the periostraca. Greatest length 25, 

 ordinary length 18 mill. 



Succinea ohliqua, Say, Long's Exped. II, "260, pl. xv, f. 7 

 (1824) ; BiNNEY's ed. 32, pl. Ixxiv, f. 7.— Adams, 

 Shells of Vermont, 15G, with fig. (1842).— DeKay, 

 N. Y. Moll. 53, pl. iv, f. 53 (1843).— Pfeiffer, Mon. 

 Hel. Viv. Ill, 15 ; in Chemnitz, ed. 2, 47, pl. v, f. 1, 2 (1854).— Binnet, 

 Terr. Moll. II, 69, pl. Ixvii, b, f. 3, excl. syn. totteniana. — W. G. 

 BiNNEY, Terr. Moll. IV, 35.— Leidy, T. M. U. S. I, 258, pl. xiii, f. 

 1-3 (1851), anat.— Tkyon, Am. Journ. Conch. II, 232, pi. ii, f. 7 

 (1866). 



Succinea ovalis, Say, Journ. Acad. Nat. Sci. Phila. I, 15 (1817) ; Nich. 

 Encycl. 3d ed. (1819) ; Binney's ed. 8. — Adams, Shells of Vermont, 

 156 (1842).— Deshayes, in Encycl. Meth. II, 20 (1830) ; Fer. Hist. 



1. c. II, 139 (excl. syn. GonLn) ; in Lam. ed. 2, VIII, 319.— Pfeiffer, 

 Mon. Hel. Viv. II, 524 ; III, 15 (excl. syn. Gopld) ; in Chemnitz, ed. 



2, 48, pl. V, f. 3, 4. 



Succinea lineata, DeKay, N. Y. Moll. 53, pl. iv, f. 51 (olim), 1843. 

 Succinea campestris of all American authors except Say. — Gould, Invert. 



195, f. 126 (1841).— DeKay, N. Y. Moll. 54, pl. iv, f. 54 (1843). 

 Succinea greerii, Tkyon, Am. Journ. Conch. II, 232, pl. ii, f. 8 (1866). 



From Gaspe to Georgia, and from the Red River of the North, 



