EASTERN PROVINCE SOUTHERN REGION SPECIES. 443 



Jaw strongly arched; ends blunt, attenuated; cutting edge deeply 

 concave and furnished with a prominent, pointed beak; anterior sur- 

 face with vertical and horizontal striae, but no grooves or rib-like proc- 

 esses ; accessory plate large, subquadrate. 



Lingual membrane (Terr. Moll., V, Plate X, Fig. N) has 15-1-15 

 teeth, with 10 perfect laterals. 



Succiiiea Sallcaiia, Pfeiffer, 



Shell depressed-ovate, very thin, delicately striated, irregularly 



marked with impressed spiral lines, i^ellucid, shining, whitish ^'^^^^• 



1 lorn -colored ; spire very short, subtuberculous ; whorls 2^, 



the penultimate convex, the last exceeding three-fourths the 



length of the shell; columella with a slight callus, strictly 



receding; aperture subi)arallel to the axis, angularly oval; s.stdUcuia. 



peristome subthickened, its right end scarcely arched. Length, 10'""; 



diameter, 10'"™; height, 17"™. Length of aperture, 16"'™; breadth below 



middle, 9'""'. 



Succinea Salleana, Pfeiffer, Proc. Zool. Soc, Nov., 1849, 133; Mon. Hel. Viv., iii, 16; 

 in Chemnitz, ed. 2, 49, pi. v, figs. 7, 8. — W. G. Binney, Terr. Moll., iv, 42, pi. 

 Ixxix, fig. 18; V, 429; L. & Fr.-W. Sh.,i, 270 (1869).— Tryon, Am. Journ. 

 Conch., ii, 240 (1866). 



Near New Orleans, belonging perhaps to the Texas Subregion. 

 Animal not observed. 



Succinea canipestris, Say. 



Shell yellowish- white or yellowish horn-color, rounded-ovate ; peri- 

 ostraca shining, wrinkled ; whorls 3, not oblique, the ^"^ *^^- 



last whorl large and ventricose, the other two consti- yr-^^ ^-rjjv 



luting the spire; spire short, with acute apex ; aper- '^/'^^ 

 ture ample, not much elongated, rounded anteriorly; 

 peristome thin and sharj). Length, 15""" ; of aperture, suennea campestris. 

 10""". 



Succinea campestris. Say, Journ. Acad. Nat. Sci. Pbila., i, 281 (1817); Nlch. Encycl., 

 ed. 3 (1819); Bixney's ed., 12.— Ferussac. Tabl. Syst., 31, pi. xi, fig. 12.— 

 Pfeiffer, Symbolae, ii, .56 (excl. syn. Gould); Mon. Hel. Viv., ii, 524 (cxcl. 

 do.); iii, 15 (excl. syn. De Kay); in Chemnitz, ed. 2, 48, pi. v, figs. 5, 6 

 (1854). — Desha. yes, in Per., ii, 139. — Binney, Terr. Moll., ii, 67, pi. lxvii,Z), 

 fig. 1.— W. G. Binney, Terr. Moll., iv, 32; v, 426; L. & Fr.-W. Sh., i, 266 

 (1869).— Tryon, Am. Journ. Conch., ii, 231 (1866).— Not of De Kay, Adams, 

 LiNSLEY, Anthony, Prescott (no desc). 



Succineaivflafa, Lea, Trans. Am. Phil. Soc, ix, 5; Obs., iv, 5 (1844) ; Proc, ii, 31 (1841).— 

 Pfeiffer, Mon. Hel. Viv., ii, 526; in Chemnitz, ed. 2, 49, pi. v, figs. 9-11 

 (18.')4).— W. G. Binney, Terr. Moll., iv, 34, pi. Ixxx, fig. 11.— Tryon, Am. 

 Jouru. Concb., ii, 230 (1866). 



Succinea unicolor, Tryon, Am. Journ. Couch., ii, 230, pi. ii, fig. 3 (1866). 



