. Bulletin - United States National Museum. Science. 144 . A MANUAL OF AMERICAN LAND SHELLS, See remarks under the following species. The specimen figured was received from Dr. Xewcomb. It may not be entirely mature. The epiphragm is thick, white, parchment-like. Jaw as usual in the genus; 8 ribs. Lingual membrane (Terr. Moll., Y, Tlate IX, Fig. M) has 3G-l-3() teeth; the thirteenth tooth has the side cutting point; IG laterals. The genital system resembles very nearly that of NicJdiniana. The duct of the genital bladder in this species is, however, very much longer, its accessory duct shorter
. Bulletin - United States National Museum. Science. 144 . A MANUAL OF AMERICAN LAND SHELLS, See remarks under the following species. The specimen figured was received from Dr. Xewcomb. It may not be entirely mature. The epiphragm is thick, white, parchment-like. Jaw as usual in the genus; 8 ribs. Lingual membrane (Terr. Moll., Y, Tlate IX, Fig. M) has 3G-l-3() teeth; the thirteenth tooth has the side cutting point; IG laterals. The genital system resembles very nearly that of NicJdiniana. The duct of the genital bladder in this species is, however, very much longer, its accessory duct shorter in proportion, the flagellum of the penis sac longer. There is also a peculiar feature in the genitalia of TrasM—a globular organ (probably a dart sac) of about equal diameter with the vaginal prostate, attached laterally to the flagellum of the latter, before it becomes bifurcated. It is figured in Terr. Moll., V, Plate XIII, Fig. H. The bulbous expansions on the two branches of the flagellumare also much larger in TrasTii. Ariontii Carpeiiteri, Nkwcomb. Shell umbilicated, roundly conical, apex obtuse, obscurely marked Fig. 123. with one brown band, well striated,- under the lens num- erous very minute spiral striations; whorls 5i, rounded; suture well marked; aperture circular, with termina- tions approximating; peristome moderately expanded, at the columella broadly so, but not adherent. Greater diameter, 23"""; height, 16i"'"'. (Xewcomb.) Helix (.'((vpetiteri, Newcomu, Proc. Gal. Acad. Nat. Sci. (March, 1861), ii, UU AgJaja Carpeiiieri, Tryon, Ain. Jonrii. Conch., ii, :513 (186G). Helix liemomli, Tkyon, Proc. Acad. Nat. Sci. Philad., 1863, 281, pi. 1,1. ! 7 7 l 11, fig. 1. Arionta Eemondi, Tryon, Am. Journ. Couch., ii, 318, pi. v, fig. 18 (1866). Jrioiifa Ccirpenfen, W. G. BixxEY, Terr. Moll., v, 366. Cinaloa; Trinidad; Coronado Island, Lower California; San Diego. Originally in Tulare Valley, in the California Region. The last locality is given
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