. Bulletin - United States National Museum. Science. EASTERN PROVINCE INTERIOR REGION SPECIES. 307 Helix elcrafa, Say, Journ. Acad. Pliila., ii, 154 (1821); Amerirau Concliolo^y, No. 4, pi. xxxvii, fig. 2 (1H:52) ; Binney's ed.,27, pi. xxxvii, fig. 2; ', ISilil. iii, 4S, pi. 2, a.—Binnky, Host. Jomu. Nat. Iliwt., i, 4ii(i, pi. xix (lti37); Terr. Mol .,ii,126, pi. iv.—Leidy, T. M. U. S., i, 256, pi. x. ligs. 4,5 (I851),aiiat.—De Kay,N. Y. Moll., 36,i)l. iii,lig. 20 (184:i).—Mks. Gray, Fig. Moll. An., pi. cxci, tig. 7, no descr.—Pfeikfeu, Syuib. Hist. Hel., ii, 27; Mon
. Bulletin - United States National Museum. Science. EASTERN PROVINCE INTERIOR REGION SPECIES. 307 Helix elcrafa, Say, Journ. Acad. Pliila., ii, 154 (1821); Amerirau Concliolo^y, No. 4, pi. xxxvii, fig. 2 (1H:52) ; Binney's ed.,27, pi. xxxvii, fig. 2; ', ISilil. iii, 4S, pi. 2, a.—Binnky, Host. Jomu. Nat. Iliwt., i, 4ii(i, pi. xix (lti37); Terr. Mol .,ii,126, pi. iv.—Leidy, T. M. U. S., i, 256, pi. x. ligs. 4,5 (I851),aiiat.—De Kay,N. Y. Moll., 36,i)l. iii,lig. 20 (184:i).—Mks. Gray, Fig. Moll. An., pi. cxci, tig. 7, no descr.—Pfeikfeu, Syuib. Hist. Hel., ii, 27; Mon. Hel. Viv.,i,317; in Chemnitz, ed. 2, i, 56, pi. vii, figs. 11 12 (1846).— Reeve, Coil. Icon., No. C81 (1^52).—Desiiayes, in FliiR ,i,329. Helix TeniiefibCivsis, EEA,T]aus. Am. Phil. Soc., ix, 1; Obs., iv, I (1844); Proc.,ii, 31 (1841); Tkoschel's Arcli. f. Nat., 1837, ii, 124. Helix ^Hoxri7Zi«»rt, Fekussac, Hist., pi. xlix,tigs. 5,6. Xolotrema elivata,Tn\'0'S, Am. Jonru. Concb., iii, 48 (1867). Mesodon elevata, W. G. Binney, Terr. Moll., v, 324. A Post-pliocene species, now found in the Interior Kegion, from Georgia (on the banks of the Tennessee Kiver) to Wisconsin, from New York to Missouri; not east of the Allegiianies. Animal ashy brown on tbe upper surface, lighter on the posterior extremity and sides ; mantle grayisb-wbite; glands prominent and dis- tinct. (See Bost. Journ. Isat. Hist., I, Plate VIII.) There is a form furnished with a brownish, revolving band upon the body-whorl, found in Eastern Tennessee. Jaw as usual in the genus; over 12 ribs. Lingual membrane (Terr. Moll., V, Plate VIII, Fig. M) with about 45-1-45 teeth; 17 laterals; the eighteenth tooth having its inner cut- ting i)oint bifid. Genitalia (see Terr. Moll., I, I. c): Penis sac long, stout, cylin- drical, receiving retractor muscle and vas deferens at its summit; genital bladder long, rounded^ stout, gradually and obtusely attenu- ated above, with a short duct. Mcsodoii Clarkii, Lea. S
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