366 LAND AND FRESH-WATER SHELLS OF N. A. [PART IV. 



concentrically, sulcately costate, frequently nodosely geniculate; 

 banded with brown; apex eroded; whorls five or six; fissure wide, 

 short; columella tuberculately thickened above. 



Length, -9 ; breadth of the ultimate whorl, •4i--5 of an inch. Length 

 of aperture, -3^. Length of fissure, -1 of an inch. — Slmttleworth. 



This species is entii-ely unknown to me, but is evidently 

 closely allied botli to tlie preceding and following. 



17. S. Wetumpkaense, Lea. 



Schizostoma Wetumpkaense, Lea, Proc. Acad. Nat. Sci., p. 187, May, 18G0. Jour. 



Acad. Nat. Sci., v, pt. 3, t. 35, f. bii, March, 18C3. Obs , ix, p. 73. 

 Gyrotoma Wetumpkaensis. Lea, Binnev. Check List, No. 336. Brot, List, p. 28. 

 Melatvma Weiiimpkaense, Lea. Reeve, Monog., t. 3, f. 17. 

 Melatoma ornata. ANTHONY, MSS., Reeve. Mono?., fig. 11. 

 Melatoma pagoda, Lea, Reeve, Moaog., flg. la. (not lb). 



Description. — Shell striate, ovately cylindrical, thick, light brown, 

 umbilicate; spire obtuse, conoidal; sutures very much impressed; 

 „. ^„ whorls six, banded, flattened, the last large; fissure ob- 



Fig. 090. 1 ^ 1 o 7 



lique and short; aperture large, ovate, banded within, at the 

 base obtusely angular; columella white, thickened above; 

 outer lip sharp and sinuous. 



Opercnhmi spiral, large and long, the polar point being 

 near to the lower left edge. 

 Habitat. — Coosa River, at Wetumpka, Ala. ; E. R. Showalter, M.D. 

 Diameter, -44; length, -70 of an inch. 



Observations. — Among the specimens from Dr. Showalter were a 

 number of adults and youug of this species. Some were eroded so 

 much as to exhibit little more than the body-whorl. The more per- 

 fect ones, still slightly eroded at the apex, exhibited six whorls. The 

 half-grown have five whorls, with a cord-like carina on the middle 

 of each, and this carina is raised much above the surface. The quite 

 young have a sharp apex, and carry the carina to near the apex. The 

 suite, which I owe to the kindness of Dr. S., consists of some eigh- 

 teen specimens, varying from one-fonrth to nearly a whole inch in 

 size. In general outline this species approaches ^S". Buddii (nobis), 

 but it is more cylindrical when full grown, and generally has bands. 

 Besides it is umbilicate, while Buddii is not. Usually Wetumpkaense 

 is striate and banded, but it is not universally the case. The aperture 

 is less than half the length of the shell. The hem is yellowish and 

 not well marked. — Lea. 



