. Bulletin - United States National Museum. Science. 366 A MANUAL OF AMERICAN LAND SHELLS. Polygyra espiloca, Ravenel, Shell rimately perforate, above slightly convex, beneath convex, stri- FiG. 398. ated, reddish horu-color, thin, with very short hairs; spire scarcely elevated; whorls 5, rather convex, the last deflected and turned outwards from the preceding one, scrobiculate, con- stricted, grooved within the umbilical region; aperture very oblique, subreniform. contracted; peristome acute, continuous, the margins joined by a lamella, excavated above, and pro- duced into a tongue-
. Bulletin - United States National Museum. Science. 366 A MANUAL OF AMERICAN LAND SHELLS. Polygyra espiloca, Ravenel, Shell rimately perforate, above slightly convex, beneath convex, stri- FiG. 398. ated, reddish horu-color, thin, with very short hairs; spire scarcely elevated; whorls 5, rather convex, the last deflected and turned outwards from the preceding one, scrobiculate, con- stricted, grooved within the umbilical region; aperture very oblique, subreniform. contracted; peristome acute, continuous, the margins joined by a lamella, excavated above, and pro- duced into a tongue-shaped tooth, the right margin having a broad, liooked lamella, and the base an erect lamelliform tooth i)roduced into and recurved within the aperture. Greater diameter 9, lesser 8"""; height, 4™"'. Helix espiloca, Ravenel, MS., Bland, Ann. N. Y. Lye, vii, 115, pi. iv, figs. 1, 2.—W. fi. BiNNEY, L. & Sh., ii, 91 (1869). DcvdaJochila espiloca, Tryon, Am. Jouni. Concli., iii, 156 (1867). Polijiiyra espiloca, W. G. BiNNEY, Terr. Moll., v, 267. Sullivan's Island, South Carolina; Saint Simon's Island, Georgia; New Orleans; Indianola, Tex. It seems, therefore, to range over the Southern liCgion. In the form of the parietal process it is intermediate between F. Pos- telliana and P. avara, but most like the latter; the teeth on the peri- stome are very similar to those in the former, but beneath it is less in- flated, the umbilical region is wider, showing more of the penultimate whoil, and it is hirsute. Jaw as usual in the genus ; 10 ribs. Lingual membrane (Terr. jMoIL, V, Plate YI, Fig. V) with 25-1-25 teeth, with 11 laterals. The inner cutting point of the marginals is simple, not bifid. Genitalia not observed. Polygyra avara, Say. Shell rimately umbilicated, depressed convex above, convex below, striated, especially near the aperture, horn-colored, thin, covered with Fig. 399.* numerous short, robust hairs; spire convex, not much ele- vated ; wh
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