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



whorls about six, flattened, somewhat impressed below the sutures ; 



aperture large, rhomboidal, diaphanous* within ; outer lip acute, 



slightly sinuous ; columella slightly bent in and thin. 



_ Habitat. — Tennessee Ejver; W. Spillman, M.D. 



Fig. 445. 



Diameter, -39 ; length, '94 of an inch. 



Observations. — Only three specimens were received from 



Dr. Spillman, two of which are little more than half grown. 



In outline it is near to Melania (Goniobasis) gracilis (nobis), 



but it is more fusiform, rather larger and not so thick. The 



color is very nearly the same. There is a slight disposition 



to angulation on the periphery of the whorls. The aperture is about 



four-tenths the length of the shell. I dedicate this species to Dr. 



Spillman, who has done so much to elucidate the natural history of 



the Southern States. — Lea. 



113. G. pallidula, Anthony. 



Melania palUaula, Anthony, Ann. N.Y.Lyc. Nat. Hist., vi, p.ll5, t. 3, f. 15, March, 

 1854. BiNNEY, Check List, No. 197. Brot, List, p. 38. Reeve, Monog. Mela- 

 nia, 8p. 417. 



Description. — Shell elongate-ovate, smooth, moderately thick ; of a 

 pale, horn-color, with a faint, brown, narrow band on the rig. 446. 

 penult whorl, increased to two on the body-whorl, and obso- 

 lete on the apical ones ; spire obtusely elevated, with a rather 

 convex outline and a well defined suture ; whorls four re- 

 maining, with indications of two more lost by truncation ; bodj'-whorl 

 angulate, and rather coarsely striate longitudinally ; aperture rather 

 large, ovate, pale within, ornamented with the two bands of the 

 body-whorl, which do not reach the outer edge, a broad, plain area 

 intervening; columella curved, with a very slight sinus at base. 



Habitat. — Tennessee. 



Diameter, -25 (6 millim.) ; length, -50 of an inch (12 millim.). 

 Length of ajjerture, •27 (7 millim.) ; breadth of aperture, -15 of an 

 inch (4 millim.). 



Observations. — This is a very neat, pretty species, whose affinity 

 with any other is not so strong as to endanger its being easily con- 

 founded ; from M. angulata (nobis) it differs in being broader, less 

 angulated, paler in color, less elongated, and by its brown bauds, that 

 species being entirely plain. — Anthony. 



i 



