EASTERN PROVINCE SOUTHERN REGION SPECIES 441 



genitalia are quite like those figured by lieidy for Liguus fasciatus (Terr. 

 Moll., I, Plate V). 



Jt will be seen (Ann. Lye. Nat. Hist, of N. Y.,XI, 38) that Orthalicus 

 (lallina sultana is also characterized bytbe want of the niultifid vesicle. 

 This organ cannot, therefore, be considered n generic characteristic. 



Family 8UC0INIU^. 



SUCCIWEA. (Seep. 336.) 

 Succinca Coiicordialis. Gould. 



Shell obliquely ovate, elongate, retlexed, apex acute, thin but firm, 

 transparent, shining, feebly striated lengthwise and spirally, color pale 

 lioiiey-yellow, with the tip ruddy; whorls 3 and somewhat fig.485. 

 more, very oblique, the two ui)permost very small, outer 

 whorl somewhat compressed above the middle ; suture well 

 marked; aperture ample, not less than two-thirds the length of 

 the shell, well rounded at base; columella regularly arcuated, concordioais. 

 more so than the peristome, simple, but its upper portion is reflexed and 

 raised so as to form a marginal wall to the ai)erture as it enters the 

 shell, and produces a slight fold where it disappears within the spire ; 

 a broad, thin callus covers the left margin, which is slightly detached 

 anteriorly, so as to form the rudiment of an umbilicus. Length, 14™»; 

 of aperture, 9""\ 



Succinea Concordialis, Gould, Proc. Bost. Soc. Nat. Hist., iii, 37 (June, 1848); in Terr. 



Moll., ii, 82, pi. Ixvii, a, fig. 2. — Pfeiffkr, Mon. Hel. Viv., iii, 16. — W. G. 



BiNNEY, Terr. Moll., iv, 41; v, 419; L. &, Fr.-W. Sli., i, 260 (1869).— Tryon, 



Am. Journ. Coucli., ii, 239 (1866). 

 Succinea munitu, Binney, Terr. Moll., i, in tables. 



Lake Concordia, in Texas ; a species of the Texan Subregion. 

 Jaw and lingual membrane as usual in the genus. 



SiiccJBica luteola. Gould. 



Shell of a conical, turreted form, sometimes rather cori)ulent and 

 again quite slender, the last whoii being much less ventricose in fig. 486. 

 proportion than the upper ones, rather thick in substance; color, jA 

 when young, pale yellowish-green or drab, becoming bleached ^^ 

 or gray with age, the interior, however, sometimes having the ^-^ 



Succinea 



bright yellow of yolk of egg, and always more or less tinted luteoia. 

 thus when living, becoming at last dead white; surface irregularly and 

 loosely wrinkled; whorls 4, forming a well-proportioned spire, the up- 



