EASTERN PROVINCE INTERIOR REGION SPECIES. 325 



Cyclostovia marginaia, Say, Joiirn. Acad. Kat. Sci. Phila.,ii, 172 (1821) ; BiNNEY'sed. 



2-2. 

 Bulimus marginatus, Pfeiffer, Mai. Blatt., ii, 94 ; Mon. Hel. Viv., iv, 414.— W. G. BiN- 



NEY, Terr. Moll., iv, 136. 

 Bulimus fallax, Gould, iu Terr. Moll., ii, 288, j)!. lii,tig. 1. 

 Pupa fallax, Say, Journ. Acad. Nat. Sci. Philad., v, 121 (1825); Binney's ed., 28.— 



Gould, Invertebrata, 192, fig. 123 (1841), escl. syn. placida ; Best. Journ. Nat. 



Hist., iv, 357, pi. xvi, fig. 15 (1843).— De Kay, N. Y. Moll., 51, pi. xxxv, fig. 331 



(1843).— Pfeiffer, Mou. Hel. Viv., ii, 309; iii,333; in Chemnitz, ed. 2, 58, pi. 



xii, figs. 20, 21 (1844).— W. G. Binney, L. & Fr.-W. Sh.,i, 239 (1869); Terr. 



Moll., V, 303. 

 Leucochila marginala, Tryon, Am. Jonrn. Conch., iii, 305 (1868). 

 Leucochila fallax, Tryon, 1. c. 



Fupa PaJTmona, D'Orbingy, Moll. Cnba, 181,pl. xii, figs. 9-11 (1853). 

 Pupa albilabris, Adams, Vermont Mollusca, 158 (1842); Silliman's Journ. [1], xl, 



271. 

 Pupilla fallax, Morse, Amer. Nat., 609, fig. 53 (1868). 

 Paludina turrita, Menke? Syn. M6tli.,40. 



From Nebraska to Texas and from New England to South Carolina. 

 It may therefore be considered to range over all of the Eastern Prov- 

 ince.* In several of the West India Islands also. 



Head, neck, and eye-peduncles black, posterior and lower i)arts 

 lighter; eye -peduncles long and slender, tentacles very short. 



Jaw wide, low, slightly arcuate ; ends blunt, but little attenuated. 



Lingual membrane (Terr. Moll., Y, Plate IV, Fig. T) as usual in the 

 genus. Teeth about 15-1-15, with about 7 perfect laterals. Centrals 

 quite narrow, the reflected portion very small, tricuspid. Laterals 

 quite broad, bicuspid. Marginals quadrate, low, wide, with one inner, 

 long, oblique, blunt denticle, and several outer, small, irregular, blunt 

 denticles. The outer lower edges of the centrals and laterals have 

 the projecting or short re-enforcements shown in the figures referred 

 to above. 



Though we retain the species in the genus Pupa, it must be remem- 

 bered that as treated by Pfeiffer it would be placed in Buliminns of 

 Albers and Martens. In general form of shell it certainly approaches 

 Buliminus montanus, Drap. 



Pupa armiferat Say. 



Shell cylindrical, subfusiform, smooth ; whorls 6 to 7, convex, the 

 three next the aperture of about equal diameter, the posterior three 

 diminishing and forming a rather obtuse apex ; suture impressed ; 

 peristome white, thin, subreflected, forming the whole outline of the 



* Referred to cwnopictus and pacifica by Jickeli, Verb. L. C. Akad., xxxiii, 97, pi. v, 

 fig. 1, radula, ii, 1. 



