. Bulletin - United States National Museum. Science. EASTERN PROVIXCE—SOUTHERN REGION SPECIES. 385 Helix tridenfata, vnr., Binxey, in Bost. Jonrn. Nat. Hist., iii,382, pi. xviii, fig. 2.—F6- RUSSAC, Hist., pi. 11, tig. .3, small fi;iure on tlic left. Helix iridentala, var. ephahus, sSay, of Ravenel's Cat., 9 (1834), no rlesrr. Triodopsi^ Hopetonensis, Tryon, Am. Jouru. Couch., ii, 52 (1867).—\V. G. Binnet, Terr. Moll., V, 311. A species of the Florida Subregion, ranging as far north as New- berne, N. C, as far south as Fort George, Saint John's Eiver. It diflers from T. fallax in its smaller,
. Bulletin - United States National Museum. Science. EASTERN PROVIXCE—SOUTHERN REGION SPECIES. 385 Helix tridenfata, vnr., Binxey, in Bost. Jonrn. Nat. Hist., iii,382, pi. xviii, fig. 2.—F6- RUSSAC, Hist., pi. 11, tig. .3, small fi;iure on tlic left. Helix iridentala, var. ephahus, sSay, of Ravenel's Cat., 9 (1834), no rlesrr. Triodopsi^ Hopetonensis, Tryon, Am. Jouru. Couch., ii, 52 (1867).—\V. G. Binnet, Terr. Moll., V, 311. A species of the Florida Subregion, ranging as far north as New- berne, N. C, as far south as Fort George, Saint John's Eiver. It diflers from T. fallax in its smaller, scarcely pervious umbilicus, its deeper color, lighter peristome, and denticles being more widely sepa- rated. Jaw as usual in the genus; over 10 ribs. The lingual membrane (Terr. Moll., V, Plate VII, Fig. N") has 27-1- 27 teeth, as far as I can judge from an imperfect membrane. There are 7 laterals, the eighth tooth having its inner cutting point bifid. Genitalia (Terr. Moll., V, Plate XV, Fig. A) readily distinguished from those of fallax, trklentafa, and others of the group by the length and cylindrical form of the genital bladder, and by the size of the duct of the same, which for a small portion of its course is considerably smaller than the bladder, and then suddenly enlarges and gradually expands until it reaches the vagina; in this particular the species is more like tridenfata than fallax. Triodopsis LiCvettei, Bland. " Shell umbilicate, orbiculate convex, thin, shining, translucent, slightly and irregularly obliquely striated, chestnut- fig. 419. colored, the upper whorls paler; spire scarcely ele- vated, apex obtuse; suture impressed; whorls 7, rather convex, gradually increasing, the last some- what depressed at the aperture, obsoletely spirally striated, constricted behind the aperture, and slightly scrobiculated ; base subconvex; umbilicus moderate, one-eighth diameter of the shell, pervious; aperture very oblique, subcircular, with a well-develope
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