V. Bollesiana. 



442 HELICID^. 



Vertigo Bollesiana. 



Shell cylindrical ovate; whorls four, sub-convex; aperture sub-orbicular; teeth 

 five; minutely perforate. 



Isthmia Bollesiana, Morsk, Ann. N. Y. Lye. viii. 209, figs. 4-6 (Nov. 1865). 

 Verti<jo Bollesiana, Morse, Am. Nat. i. 669, fiL^s. 63, 64 (1868). 



Fig- T03. Shell minutely perforate, cylindrical-ovate, 



delicately striated, snb-translucent ; apex ob- 

 tuse ; suture well-defined ; whorls four, sub- 

 convex ; aperture sub-orbicular, somewhat 

 flattened on its outer edge ; with five teeth, 

 one prominent and rather curved on the 

 parietal margin, two similar in form, the 

 lower one the smaller, on the columellar margin, and two slightly 

 elevated lamelliform teeth within and at the base ; peristome sub- 

 reflected and thickened. Length, sixty-five thousandths of an inch; 

 breadth, thirty-five thousandths of an inch. {^Morse.^ 

 New England ; New York ; Virginia. 



Vertigo ovata. 



Fig. 119. 



Shell ovate-conic, amber colored ; whorls five or six, convex, Avrinkled ; aper- 

 ture semi-oval, broader than long; teeth live; umljilicus distinct. 



Vertiqo ovata. Say, Journ. Acad. Nat. Sc. ii. 375 (1822); ed. Binney, 26. — Binnky, 



Terr. Moll. ii. 334, pi. 71, fig. 4. — W. G. Binney, Terr. Moll. iv. 148. — Morse, 



Am. Nut. i. 668, fi-s. .-37, .58 (1868). 

 Pupa ovata, Gould, Best. Journ. N. II. iv. 3.50, pi. 16, figs. 7, 8 (1843). -De Kay. 



N. Y. Moll. .50, pi. 4, lig. 50 (1843). — Adams, Vermont Moll. 157 (1842): Silhrn. 



Journ. [1] xl. 27!. — KusTER, in Chemn. c<1. 2, 118, pi. 14, figs. 1, 2; pi. 15, tigs. 



35_3S._Pfeiffer, Men. Hel. Viv. ii. 360; Symb. ii. 54. 

 Pupa modesta, Say, Long's Ex. ii 25, pi. 15, fig. 5 (1824) ; cd. Binney, 32, pi. 74, fig. 5. 



— Gould, Inv. 188, fig. 119 (1841). 

 Pupa ovuluw, Pfeiffer, olim, Symb. 46. 

 Jslhmia ovata, Morse, Journ. Portl. Soc. i. 38, fig. 93 ; pi. 10, fig. 94 (1864). 



Shell minute, ovate-conic, thin, aml)er colored, whorls five ; some- 

 times six, minutely wrinkled, well-rounded, and defined hj a deep 

 suture, gradually diminishing to a rather acute apex ; ajwrture about 

 half the breadth of the last whorl, slightly oblique ; rather broader 

 than long ; semi-oval, but modified by an inflection of the outer lip ; 

 lip simple, not reflected, joining the preceding whorl behind, by a 

 curve ; teeth five, slender, sharp and direct, like the teeth of a 



