. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 286 TERRESTRIAL AIR-BREATHING MOLLUSKS. Bermuda and New Providence, but it ia more coarsely striated, and the last whoil is more inflated below. Jaw as usual; 10 ribs. P. Febu/eri (PI. VI. Fig. J) has 17—1—17 teeth on the linpjual membrane, with 9 laterals, the tenth tooth havinor a bifid inner cuttin<j; point. Genitalia as in P. septevivoloa, cereolus, and Ctirpenteriana. Polygyra puatula, F^r. Shell umbillcated, orbicularly depressed, minutely striated, reddish or pale horn-color, hirsute; spire scarcely
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 286 TERRESTRIAL AIR-BREATHING MOLLUSKS. Bermuda and New Providence, but it ia more coarsely striated, and the last whoil is more inflated below. Jaw as usual; 10 ribs. P. Febu/eri (PI. VI. Fig. J) has 17—1—17 teeth on the linpjual membrane, with 9 laterals, the tenth tooth havinor a bifid inner cuttin<j; point. Genitalia as in P. septevivoloa, cereolus, and Ctirpenteriana. Polygyra puatula, F^r. Shell umbillcated, orbicularly depressed, minutely striated, reddish or pale horn-color, hirsute; spire scarcely elevated; whorls 4i, flattened, gradually in- Fie 184 creasing, the last more convex below, deflected at the aper- ture, constricted behind the peristome; umbilicus broad, pervi- ous, with a deep groove marked within the shell by an internal, revolving, ridge-like lamella, branching from a stout, transverse, internal tubercle; aperture very oblique, narroAv, sinuously lunate; peristome sinuous, white, thickened, acute, somewhat reflected, its terminations joined by a two-forked, elevated, acutely pointed lamina, the basal margin with two approxi- ''"*' mated acute denticles, the columellar termination entering and somewhat covering the umbilicus. Greater diameter 5, lesser 4 mill.; height, 2J mill. Helix pustula, F^.RUSSAC, Hist, PI. 1. Fig. 1. —Deshayes in F^r. I. 78, t. 1. Fig. L--PFEIFFER, Symb., III. 81; Mon., I. 422; IV. 268, excl. /3 ; in Chemnitz, ed. 2, I. 376, PI. LXV. Figs. 18-20 (1846).—Reeve, Con. Icon., 721 (1852). — Bland, Ann. N. Y. Lye, VI. 346, Fig. 1 (1858). —W. G. Bin- KEY, Terr. MolL, IV. 94, PI. LXXVII. Fig. 12; L. k Sh., L 109 (1869). — Not of Binney. Dcedalochila pustula, TuYON, Am. Journ. Conch., III. 62 (1867). A species of the whole Southern Region, having been received from Texas, Cedar Keys, St. Augustine, South Carolina, and Lee County, Georgia. The groove within the umbilicus is a very marked feature in Ferussac's spe- ci
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