AXGITREMA. 



21 



most specimens, but in some, though rarely, this part is carinate or 

 rounded. Some are slightlj^ tuberculated below the suture. Among 

 the young specimens some are costate near the apex, others entirely 

 smooth aud without bands. I owe the fine specimen figured to Mr- 

 Button, after whom I name it. — Lea. 



This species is smaller and more fragile than L. armigera. It 

 is also elegautly banded, which is more rarely the case with armi- 

 gera; and it differs also in having smaller, frequently obsolete 

 tubercles, and in the aperture being much less channelled. 



J,. 5- I do not hesitate in agreeing with M. Brot in 



considering fasciolata, Reeve, as a synonyme. 



The original description and copy of Reeve's 

 figure are given below. 



lo fasciolata. — Shell shortly fusiform, yellowish- 

 green, encircled with narrow bands of olive, whorls 

 5 to 6, convexly sloping, the first smooth, the last 

 gibbously angled, tubercled at the peripherj^ tuber- 

 cles distant ; aperture diamond-shaped, scarcely channelled. 

 Habitat. — United States. 



Observations. — Closely allied to L. Duttoniana, but less channelled, 

 and more widely apertured, owing to the more gibbously angled cir- 

 cumference of the last Avhorl. — Beeve. 



Fig. 56. 



9, A. Wheatleyi, Tryon. 



Angitrema Wheatleyi. Tryox, Am. Journal of Couchol., vol. ii, p, 4, t, 2, f. 1, 1S66. 



Description. — Shell conoidal, inflated, rather thin ; spire conical, 

 sharp pointed, suture not much impressed; whorls about six, those 

 of the spire flattened, the body-whorl large, rather 

 flattened above the somewhat angled periphery, con- 

 vex below, and somewhat attenuate at the base; the 

 periphery is ornamented with a single prominent row 

 of slightly compressed tubercles, and above is rugosely 

 wrinkled, with a tendency towards tuberculation ; aper- 

 ture large, subrhomboidal, half the length of the shell, 

 somewhat attenuate below, columella nearly perpen- 

 dicular, a little twisted. Bright horn-color, with four broad, equi- 

 distant brown bands. 



Habitat. — Elk River, at Winchester, Tenn. 



Diameter, IG mill. ; length, ^J miU. 



