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



tured rouucl the whole circle. This arises from the fact that the 

 animal having filled up the channel with calcareous deposit, suddenly 

 recommences at a new line of growth, some distance below, leaving 

 open and bare of epidermal matter this upper portion of the channel, 

 which, consequently having a sharp edge, becomes more or less frac- 

 tured. The whorls are so much flattened that the two sides are 

 nearly parallel. One of the specimens has a small spot of brown in 

 the aperture above and below ; the other has none. This species is 

 allied to auriculaformis (nobis) on one side, and olivitla, Conrad, on 

 the other, but it may be easily distinguished from both of them. The 

 foi'mer is a smaller shell and more fusiform ; the latter is more coni- 

 cal, less thickened on the columella, and not irregularly fractured in 

 the suture. The number of whorls or proportional size of the aper- 

 ture cannot be ascertained on the specimens before me. They have 

 the appearance of having been very ranch exposed to an attacking 

 enemy, hence the name. — Lea. 



In Coll. Haldeman are specimens labelled "Kemper Comity, 

 Mississippi." 



200. G. pupoidea, Anthony. 



Melanin pup oidea, Anthony, Ann. Lye. Nat. Hist. N. Y., vi, p. 104, t. 3, f. 3, April, 

 1854. Brot, List, p. 33. BiNNEY, Check List, No. 224. Reeve, Monog. Mela- 

 nia, sp. 249. 



Melanin propinqua, LEA, Proc. Acad. Nat. Sci., p. 119, 1861. 



Goniohasis jjropinqun, LEA, Journ. Acad. Nat. Sci., v, pt. 3, p. 234, t. 34, f. 29, March, 

 18G3. Obs., ix, p. 56. 



Description. — Shell ovate-conic, smooth, rather thick; spire ob- 

 tusely elevated, with a decidedly convex outline, and a well impressed 

 suture ; whorls seven, convex, nearly entire at the apex ; color pale 

 green, with one linear band revolving on the spire, and four broader 



_ and more distinct bands on the body-whorl ; aperture small, 



Fig. 579. J , f 



narrow ovate, diaphanous, with four distinct, brown bands 

 within; columella rounded, not indented; outer lip curved 

 and extended forward ; sinus small. 

 Habitat. — Alabama. 



Diameter, So (9 raillim.); length, -87 of an inch (22 mil- 

 lim.). Length of aperture, -38 (10 millim.) ; breadth of aperture, 

 •17 of an inch (4 millim.). 



Observations. — This belongs to that group of which M. olivula, 

 Conrad, may be considered the type. From that shell it differs, how- 



