GONIOBASIS. 339 



iUaris and M. impressa (nobis), (all Goniohases) by its numerous trans- 

 verse striae ; but these striae are neither so numerous, so regular, nor 

 the intervals so deeply impressed, nor do these striae exist -pj g^g 

 on the upper whorls, as in those species. The color of the 

 epidermis is also much lighter and brighter. In outline it 

 is near to impressa, but the spire is not so elevated, nor has 

 it the bands which are visible on that species. It is to be 

 regretted that a single specimen only was received, as 

 others may be found with different character. This one 

 has an obscure band on the upper whorls, but none whatever on the 

 lower one. The stria; on the outside are represented inside by whit- 

 ish lines. The aperture is fully half the length of the shell.— Lea. 



This may be merely a variety of impressa^ in which tlie 

 striae are not so well developed. 



255. G. capillaris, Lea. 



Melanla capillaris, LEA, Proc. Acad. Nat. Sci., p. 122, 1881. 



Goniobasis capillaris, Lea, Jonr. Acad. Nat. Sci., v, pt. 3, p. 23G, t.34, f. 31, March, 

 1863. Obs., ix. p. 5S. 



Description. — Shell thickly striate, subfusiform, somewhat thick, 

 yellowish-brown, covered with close, transverse stria; ; spire very ob- 

 tuse; sutures irregularly impressed; whorls somewhat compressed, 

 the last large ; aperture large, widely elliptical, "capillaiy 

 striae within; outer lip crenulate; columella whitish, thick- 

 ened, incurved, obtusely angular at the base. 



Operniliim ovate, spiral, dark brown, with the polar point 

 near the inner side and near to the base. 



Habitat. — Coosa River, Alabama; E. R. Showalter, M.D. 

 and Wm. Spillman, M.D. 

 Diameter, -38 ; length, -88 of an inch. 



Observations.— This species belongs to the group of which Melania 

 (Goniobasis) impressa (nobis) may be considered the type. It is cov- 

 ered with hair-like raised lines, like impressa and Melania (Goniobasis) 

 crebristriata from the same river. It may be distinguished from the 

 former by being more cylindrical, being of a slightlj' lighter brown, 

 and in having more striae. From the latter by having a less esserted 

 spire, by having finer striae and being of a darker brown. All three 

 of these species have usually more or less fine brown bands in the 



