. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Fijr. 274 TERRESTRIAL AIR-BREATHING MOLLUSKS. tate; within the base of the last whorl is a small, detached, erect, rounded tubercle; peristome white, reflected, its terminations joined by a stout, subtriangular, excavated, deeply entering tooth, the right-hand margin with a stout, deeply seated tooth, the colu- mellar margin with a submarginal smaller tooth. Greater diam- eter 10, lesser 9 mill.; height, about 4 mill. Polygyra fatigiata, Say,1 N. Harm. Diss., II. 229 (1829) ; ed. Bin- ney, 37. Helix fatigiata, B
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Fijr. 274 TERRESTRIAL AIR-BREATHING MOLLUSKS. tate; within the base of the last whorl is a small, detached, erect, rounded tubercle; peristome white, reflected, its terminations joined by a stout, subtriangular, excavated, deeply entering tooth, the right-hand margin with a stout, deeply seated tooth, the colu- mellar margin with a submarginal smaller tooth. Greater diam- eter 10, lesser 9 mill.; height, about 4 mill. Polygyra fatigiata, Say,1 N. Harm. Diss., II. 229 (1829) ; ed. Bin- ney, 37. Helix fatigiata, Binney, in Bost. Journ. Nat. Hist.," III. 388 (1840), ex parte (excl. syn. et Fig.) ; Terr. Moll., II. 193 (pars), PL XXXIX. Fig. 4 (excl. syn.). — Shuttlewortii, Bern. Mitt., D 7 1852, 197. — Bland, N. Y. Lye, VI. 283, PI. IX. Figs. 17- P. fastigans. ' J ' ° 20 (1858). — W. G. Binney, Terr. Moll., IV. 82; L. & W. Sh., I. 97, Fig. 173 (1869). — Pfeiffer, Mon. Hel. Viv., IV. 318. Helix Tcxasiana, j3, Pfeiffer, Mon. Hel. Viv., I. 418 ; III. 2fi7 ; in Chemnitz, ed. 2, I. 86, exed. descr., syn., et fig. —Deshayes in Feb., I. 74, excl. descr., syn., et fig. Helix Dorfeuilliana, Deshayes in Fer., I. 73 (excl. syn.), PI. LXIX. D, Fig. 3, not of Lea. Helicina fastigiata, DeKay, N. Y. Moll., 82 (1843). Helix fastigans, L. W. Say, MS. in Bland, Ann. N. Y. Lye, VII. 140. Dazdalochila fastigans, Tryon, Am. Journ. Coneh., III. 67 (1867). A species of the Cumberland Subregion, found in Tennessee at Clarkeville and Nashville and in Franklin County, in Kentucky in Henry County. P. fastigans is larger than Troostiana, Hazardi, and Dorfeuilliana; it is most nearly allied to the first, and though it is connected with the second, is wholly distinct from the last. The parietal tooth is more rectangular than that of Troostiana, in which it is slightly emarginate near the tip, but much more so in Hazardi, while the parietal tooth in Dorfeuilliana is rather quadrate. The teeth
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