270 NEW MELANID^E OF THE UNITED STATES. 



naturally to divide themselves, adopting the well recognized genera which have been 

 established. 



Trypanostoma Hartmanii. PL 36, fig. 80. 



Testa lievi, interdum obsolete canaliculata, solida, virente vel rufo-fuscesccnte, regulariter conica, vittata 

 vel evittata ; spira pyraruidata ; suturis regulariter impressis ; anfractibus instar novenis, convexius- 

 culis ; apertura parva, rhoniboidea, intus vel alba vel salmonea ; labro acuto, sinuoso ; columella in- 

 ferne incrassata et valde contorta. 



Shell smooth, sometimes obscurely channelled, solid, greenish or reddish brown, 

 regularly conical, banded or without bands ; spire pyramidal ; sutures regularly im- 

 pressed ; whorls about nine, slightly convex ; aperture small, rhombic, white or salmon 

 color within ; outer lip acute, sinuous ; columella thickened below and very much 

 twisted. 



Proc. Acad. Nat. Sci. 1862, p. 173. 



Hah. — Cahawba and Coosa Rivers, Dr. Showalter ; Warrior River, Alabama, Dr. 

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



My cabinet and cabinets of Dr. Showalter, Dr. Hartman, Mr. Anthony and Dr. 

 Budd. 

 Diam. -50, Length P25 inch. 



Remarks. — Two or three specimens of this fine species have been in my collection for 

 a long time, and were given to me under the name of Melania pyrenella, Con., but Mr. 

 Conrad's shell is not so solid, has flatter whorls and is carinate. Some of the speci- 

 mens of Hartmanii are furnished with two broad bands, which are usually well marked 

 inside, others are without bands, and these are usually salmon-colored within. Three 

 of the specimens out of some thirty before me, are of a rich dark brown, which arises 

 from the interior nacre being purplish. The aperture is more than one-third the 

 length of the shell. 



I have great pleasure in naming this after my friend W. D. Hartman, M. D., who 

 has furnished me with a number of fine specimens.* 



Trypanostoma Jayi. PL 36, fig. 81. 



Testa lsevi, subpupoidea, crassa, nitida, rufo-fusca; spira obtuso-conica ; suturis valde impressis ; anfracti- 

 bus octonis, subtumidis, ultimo subgrandi ; apertura parva, rhoniboidea., subangusta, intiis pallido- 

 fusca ; labro acuto, sinuoso ; columella inferne incrassata et contorta. 



Shell smooth, pupgeform, thick, shining, reddish brown ; spire obtusely conical ; 

 sutures very much impressed ; whorls eight, rather swollen, the last rather large ; 



* Since the above was written, a letter received from Dr. Hartman, says, that Dr. Showalter informed him 

 that "the orange color of the animal is remarkable." Dr. Hartman also mentions that he and Dr. Showalter had 

 distributed this shell under the name of Melania ■pyrenella, Con., which mistake Dr. Hartman corrected by 

 reference to the type specimen, which is in the collection of the Academy of Natural Sciences. 



