EURYC^LON. 



345 



Habitat. — Tuscaloosa, Alabama. 



Diameter, -5 of an inch ; length, I inch. 



Observations. — There were six specimens submitted to me by Dr. 

 Budd, -which I refer to the one species, although they y\s.G55. 

 present considerable difference. Five of the specimens 

 are dead and bleached shells, and are of a light yellow or 

 buff color. The sixth is a fresh and perfect specimen, 

 with four small, purple bands and a tuberculous shoulder, 

 the tubercles being prolonged nearly iuto folds. Two 

 others are indistinctly banded. Another has a tuber- 

 culous shoulder, and is disposed to be granulate. From 

 these varieties arises the name given to it. The aperture is rather 

 contracted, and about two-flfths the length of the shell. — Lea. 



6. E. gibberosa, Lea. 



Goniohasis gibberosa. Lea, Proc. Acad. Nat. Sci., p. 2f>G, 1862. Jour. Acad. Nat. 

 Sci., V, pt. 3, p. 312, t. b7, f. 155, March, ISUS. Obs., ix, p. 134, t. 37, f. 155. 



Description. — Shell smooth, subfusiform, thick; spire obtuse; sut- 

 ures irregularly impressed; whorls hump-backed, slightly convex 

 Fig. 656, above, the last one very large ; aperture very large rhom- 

 boidal, white within; outer lip acute, sinuous; columella 

 bent in, thickened above and below. 



Operculum ovate, dark brown, with the polar point near 

 to the base, on the inner edge. 



£(<M^a<.— Alabama River: E. R. Showalter, M.D. 

 Diameter, -48 of an inch; length, 1-03 inches. 

 Observations. — Four specimens of this remarkable species are be- 

 fore me. They were sent by Dr. Showalter to Dr. Hartman, who 

 called my attention to them and sent them for examination. The 

 species is singular for the four to six hump-like elevations which 

 exist on the upper half of each of the whorls and which leave flattish 

 spaces between, on one of which spaces the shell will always rest 

 when the specimen is moved on a flat surface. One of the specimens 

 has four distinct bands, one has these obsolete, the two remaining 

 ones are without bands. The only species to which this has close 

 aflinities is Melania {Goniohasis) basalis (nobis), it having somewhat 

 like irregular elevations, but it is a smaller and thinner species with 

 agreeuisli epidermis and thick close bauds. None of the four spcci- 



