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



25a. p. incrassum, Anthony. 



Melania incrassata, Anthony, Ann. Lye. N„Y., vi, p. 99, t. 2, f. 17, March, ]851. 



BiNNEY, Check List, No. 144. Brot, List, p. 34. 

 Trypanostoma Hnrtmanii, Lea, Proc. Acad. Nat. Sci., p. 173, 1802. Jour. Acad. 



Nat. Sci., V, pt. 3, p. 270, t. 36, f. 80. Obs., Ix, p. 92. 

 Trypanostoma bivittatum. Lea, Proc. Acad. Nat. Sci., p. 175, 1862. Jour. Acad 



Nat. Sci., V, pt. 3, p. 279, t. 36, f. 97. Obs., ix, p. 191. 



Description. — Shell conical, .smooth, thick; spire elevated; whorls 

 8-9, very convex, somewhat biangulated ; sutures deeply impressed ; 

 body-whoi'l striated, with a constriction about the middle, which 

 also extends to the penultimate whorl ; aperture ovate, within 

 reddish; columella not indented, reflected, sinus deep. 



Habitat. ? 



My Cabinet, 



Diameter, '45 of an inch (12 millim.); length, 1-12 inches (29 rail- 

 Jim.). Length of aperture, '37 inch (9 millim.) ; breadth of aperture, 

 •18 inch (4i millim.). 



Observations. — Only one specimen has come under my notice, which, 

 however, is so unlike any other that I cannot hesitate to consider it 

 new. — Anthony. 



Fig. 155. It is a thick, ponderous species, with narrow 

 convex or biangulated whorls, faintly banded on 

 the angulations. 



Trypanostoma Ilartmanii. — Shell smooth, sometimes ob- 

 scurely channelled, solid, greenish, or reddish-brown, reg- 

 ularly conical, banded or without bauds; spire pyramidal; 

 sutures regularly impressed ; whorls about nine, slightly 

 convex; aperture small, rhombic, white or salmon-color 

 within ; outer lip acute, sinuous ; columella thickened 

 1t)elow and very much twisted. 



Habitat. — Cahawba and Coosa Rivers; Dr. Showalter: Warrior 

 River, Alabama; Dr. Budd : Knoxville; J. Clark: Tennessee River, 

 Alabama; Dr. Spillman. 

 Diameter, -50; length, 1-25 inches. 



Observations. — Two or three specimens of this fine species have been 

 in ray collection for a long time, and were given to me under the name 

 of Melania pyreneUa, Con., but Mr. Conrad's shell is not so solid, has 

 flatter whorls and is carinate. Some of the specimens of Hartmanii 

 are furnished with two broad bands, which are usually well marked 



