418 A MANUAL OF AMERICAN LAND SHELLS 



of Pupa fallax, except that it is only about half as large and has about 

 two whorls less to the spire. The aperture is somewhat more bell- 

 shaped, aud the peristome is thin and revolute instead of being thick 

 and flattened. 

 Animal unobserved. 



Pupa pellucida, Pfr. 



Shell subperforate, cylindrical, thin, pellucid, shining, pale yellow ; 

 Fig. 461. spire somewhat attenuated, apex obtuse ; whorls 5, con- 

 vex, the last flatter than the penultimate ; aperture semi- 

 oval, with 5 teeth ; single strong teeth on columella and 

 parietal wall of aperture, two moderate ones on right side, 

 a fifth small basal one within the aperture ; peristome sim- 

 Pup a pellucida. pie, its right end exjoanded, its columellar end reflected. 

 Length 2""" ; diameter scarcely 1'""' ; aperture scarcely |™'" long. 



Pu2}a pellucida, Ffeiffer, Symbolse, i, 46; Hon. Hel. Viv., ii, 360: in Roomer's Tex- 

 as, 456. — KusTER, in Chemnitz, ed. 2, S9, pi. xii, figs. 24, 25. — W. G. Binney, 

 Terr. Moll., iv, 147; v, 211 ; L. & Fr.-W. Sh., i, 246 (1869). 



Pujja serviUs, Gould, Bost. Journ. Nat. Hist., iv, 356, pi. xvi, fig. 14. — Pfeiffer, Mod. 

 Hel. Viv., ii, 360. 



Pupa EUsei, Pfeiffer, olim, Mon. Hel. Viv., iii, 532. — Kuster, in Chemnitz, ed. 2, 

 176, pi. xxi, figs. 13, 14. 



Leucochila pellucida, Tryon, Amer. Journ. Conch., iv.(1868). 



A. West Indian species, quoted by Pfeiffer from Texas, but not else- 

 where noticed; it is probably confined to the Texan Subregion. I 

 have seen no specimens of it. Fig. 401 is a fac-simile of that of P. 

 servilis. 



Animal unobserved. 



STROPHIA, Albers. 



Animal heliciform, blunt before, pointed behind; mantle posterior, 

 protected by a shell ; respiratory and anal orifices on the right of the 

 mantle, under the peristome of the shell; generative orifice behind the 

 right eye-peduncle ; no caudal mucus pore or locomotive disk. 



Shell rimate, cylindrical or oblong-ovate, perpendicularly costulate or 

 ribbed, solid, white, often variegated with red; whorls 9-12, the last 

 narrowed towards the base, often ascending; aperture semi-oval, 

 usually bluish-brown within, columella with a dentiform fold, parietal 

 wall furnished with an internal denticle; peristome thickened, reflexed, 

 its margins connected by a somewhat heavy callus. 



A West Indian genus, found also in the Florida Subregion. 



But one species, S. incana, Binn., is ^ound within our limits. I have 



