1 74 LAND AND FRESII-WATER SHELLS OF N. A. [PART IV. 



40. G. formosa, Conrad. 



Melania formosa, Con'EAD, New Fresh- Water Shells, Appendix, p. 5, t. 9, f. 3, 1834. 



Whkatlky, Cat. Shells, U. S., p. 25. Binxev, Check List, No. 112. 

 Melania formosa, Anthony, REEVE, Monog. Melauia, sp. 387. Brot, List, p. 35. 

 Goniobasis ornatella. Lea, Proceed. Acad. Nat. Sci., yi. 269, 18(52. Jour. Acad. Nat. 



Sci., V, pt. 3, p. 326, t. 38, f. 181, March, 18G3. Obs., ix, p. 118. 



Description. — Shell with distant, robust, rounded ribs, and six 

 convex whorls, with two approximate, prominent lines at the summit 

 of each ; base profoundly striated ; color olivaceous, with 

 distant, brown bauds. 

 Habitat. — Inhabits streams in North Alabama. — Conrad. 



Fig. 337. 



The figure is from an authentic specimen in the col- 

 lection of Mr. Anthony. Prof. Haldeman also pos- 

 sesses an author's type. It is a very beautiful species 

 and apparently very constant in its characters. G. nassula, 

 Conrad, is an allied species, but is striate and more rounded 

 in the form of the aperture and in the whorls. 

 The following is a synonyme. 



Goniobasis ornatella. — Shell folded, fusiform, rather thick, yellow- 

 ish horn-color, banded; spire obtusely conical; sutures irregularly 

 and very much impressed ; whorls about six, convex ; aperture large, 

 ovately I'homboidal, whitish and obscurely banded ; outer lip acute, 

 scaixcly sinuous; columella slightly bent in and, twisted. 



Habitat. — Tennessee ; Coleman Sellers. 



Diameter, '27; length, -53 of an inch. 



Observations. — A single specimen was among a number of MelanidoR 

 kindly given to me by Mr. Sellers a long time since, one of which 

 I then named after him. This pretty little species is ornamented 

 with regular folds, which are slightly curved, and incline to the 

 right. These folds cease at the middle of the bodj'-whorl, being cut 

 by an indented line below the suture, causing a granulation. In this 

 specimen are five bands which arc indistinct. It has nearly the same 

 outline as crispa, herein described, but it is smaller, is not clathrate 

 above, and the folds are not so strong. The aperture is about half 

 the length of the shell. — Lea. 



