ANCDLOSA. 419 



Description. — Shell smooth, rounded or elliptical, very thick, dai-k 

 horn-color; spire obtuse; sutures scarcely impressed; aperture small, 

 nearly rouud, within white ; columella very thick. 



Habitat. — Tuscaloosa, Alabama. 



Diameter, -45; length, -77 of an inch. 



Observations. — Dr. Budd submitted live specimens to me, and, as 

 is frequently the case, in this genus, I do not find any Fig. 835. 

 two of the five exactly of the same outline. One is 

 nearly round and presents but a single whorl. Another, 

 a younger and more perfect specimen, is somewhat ellip- 

 tical, and presents five whorls and a mammilate form. 

 A third specimen is quite elliptical, the spire being obtusely conical. 

 It is a very solid species, with a broad, thick columella, and a con- 

 siderable callus above. All the five are obscurely banded. This 

 species is allied to A. prairosa, Say, but difi'ers somewhat in form, and 

 has bands, not spotted lines. In some of the specimens the aperture 

 is nearly the whole length of the shell. — Lea. 



26. A. patula, Anthony. 



Anculosn pntula, Anthoxy. Proc. Acad. Nat. Sci., p. 68, Feb., 18G0. 

 Anculotiis pitnlus. Anthony, Reeve. Monog. Anculotus, t. 4, 1". 3-2. 

 Lcp!oxis patula, Anthony, Bl^•^EY, Check List, No. 376. Bkot, List, p. 25. 



Description. — Shell ovate, of a uniform, dark horn color, rather 

 thin; whorls 4-5, convex; sutures very distinct; aperture semicir- 

 cular, witliin whitish; columella only slightly rounded, somewhat 

 flattened by a callous deposit, more or less tinged with dirty red. 

 Habitat. — Tennessee. 



Observations. — Resembles none other of the genus; its color. 

 Fig. 836. which is of a dull, dark brown, and its semicircular mouth, 

 remarkable for its length and breadth, are prominent 

 marks of distinction ; the body-whorl is very much in- 

 flated and angnlated or subangulatcd ; the interior aper- 

 ture is often blotched with regular, dirtj' brown spots; 

 spire elevated and acute, rapidly diminishing to the apex; the lines 

 of growth are strong, and on some specimens a single prominent 

 varix may be noticed. — Anthony. 



