GONIOBASIS. 301 



ever, iu bem;; more elongate, and less ornamented ■with bands, as 

 well as by its paler and less varnislicd epidermis. Compared with 

 M. proteus, Lea, it is even more elongate and less acute ; the aperture 

 is entirely different, and it wants the tuberculous shoulder which dis- 

 tinguishes that species. Its resemblance to the pupse of some of the 

 insect tribes has suggested its characteristic. — Anthony. 



The following is a synonyme. 



Go7iiobasis propinqua. — Shell smooth, subcylindrical, somewhat 

 thick, yellowish, four-banded ; spire somewhat raised, conical ; sut- 

 ures very much impressed ; whorls six, flattened above ; aperture 

 elliptical and rather small, whitish and banded within; outer Fig.580. 

 lip acute ; columella slightly thickened and rounded below. 



Habitat. — Coosa and Cahawba Elvers, Alabama ; E. R. ^:^,^ 

 Showalter, M.D. 



Diameter, -33 ; length, -90 of an inch. 



Observations. — This species is very closely allied to Ilelania 

 (Goniobasis) pupoidea, Anthony, but it differs in being more cylin- 

 drical, in being smaller, and in having the base of the aperture more 

 rounded. Most of the specimens are decollate. One has a few raised 

 striae. In some there is a disposition to have a shoulder under the 

 sutures. — Lea. 



"Without the large series of specimens before me I should 

 have acquiesced in the institution of ivopinqua as a distinct 

 species, but I find every grade of form between the two. The 

 shorter forms become very close to oUvula, Conrad, with which 

 indeed, they have been confounded. They are distinguished 

 by difference of color, and principally of texture, olivula being 

 much heavier. 



201. G. lita, Lea. 



Melanin lita, UEA, Proc. Acad. Nat. Sci., 18G1, p. 121. 



Goniohasis lita, LEA, Jour. Acad. Nat. Sci., v, pt. 3, p. 239, t. 34, f. 40, M.irch, 1863. 

 Obs., ix, p. CI. 



Description. — Shell rugosely striate, subfusiform, rather large, four- 

 banded, variegated, shining; spire obtusely elevated ; sutures irregu- 

 larly impressed ; whorls six, convex above, the last elongate ; aperture 

 somewhat constricted, elongately ovate, purplish and banded within; 

 outer lip acute, thickened; columella incurved and purple below, 

 rounded at the base. 



i/a?n'ra«.— Cahawba River, Alabama; E. W. Showalter, 'M. D. 



