NATURAL SCIENCES OP PHILADELPHIA. 171 



vel vittata vel evittata; spira regulariter elevata; suturis parum impressis ; 

 aafractibus instar denis, planulatis ; apertura parviuscula, rhomboidea, intus 

 albida. ; labro acuto, valde sinuoso ; columella interne incrassata, et valde 

 contorta. 



Hab. Tu'scumbia, Ala., L. B. Thorton, Esq. and Rev. G. White. Chatta- 

 nooga, Tenn., J. Clark. 



Trypanostoma Troostii. Testa carinata, conoidea, valde inflata, vel luteo- 

 cornea vel viridescente, vel vittata vel evittata ; spira elevata; suturis valde et 

 irregulariter impressis ; anfractibus instar novenis, subimpressis, interdum 

 canaliculatis ; apertura grandi, rhomboidea, intus albida, interdum vittata; 

 labro acuto, sinuoso ; columella interne incrassata et valde contorta. 



Hab. Tennessee, Prof. G. Troost. Florence, Ala., Rev. G. White. Ooste- 

 naula River, Ga., Bishop Elliott ; and Fox River, near New Harmony, Indiana, 

 J. Sampson. 



Trypanostoma incurvdm. Testa carinata, conoidea, subtenui, cornea; spira 

 subelevata; suturis regulariter impressis; anfractibus octonis, planulatis, in- 

 terne obsolete striatis ; apertura parviuscula, rhomboidea, intus albida; labro 

 acuto, sigmoidea ; columella valde contorta. 



Hab. Florence, Ala., Rev. G. White. 



Trypanostoma Postellii Testa, carinata, pyramidata, subcrassa, cornea ; 

 spirit regulariter conica; suturis valde impressis; anfractibus octODis, vel 

 planulatis vel impressis, ultimo parviusculo; apertura parvissima, rhomboidea, 

 intus albida; labro acuto, valde sinuoso ; columella interne incrassata et valde 

 contorta. 



Hab. Tennessee River, J. Postell. North Alabama, Prof. Tuomey. 



Trypanostoma Tuomeyi. Testa carinata, crassiuscula, elevato-conica, tene- 

 broso-fusca, ; spira elevato-conica; suturis vix impressis; anfractibus instar 

 denis, planulatis, inferne obsolete striatis ; apertura parva, rhomboidea, intus 

 tenebrosa ; labro acuto, sinuoso; columella paulisper incrassata, et valde 

 contorta. 



Hab.Sovlh. Ala., Prof. Tuomey. Florence, Ala., Rev. G. White. 



Trypanostoma Florencense. Testa, subcarinata, tnrrita, subcrassa, tene- 

 broso-fusca. vel luteo-cornea, obsolete vit'ata vel evittata ; spira valde elevata ; 

 suturis leviter impressis : anfractibus instar undenis, paulisper convexis ; aper- 

 turii parviuscula, rhomboidea, intus cseruleo-alba; labro acuto, sinuoso ; colu- 

 mella, albida et valde contorta. 



Hab. Florence, Ala., Dr. Spillman. Tuscumbia, L. B. Thornton, Esq. 



Trypanostoma Clarkii. Testa, obtuse 1 carinata, conica, subcrassa, tenebroso- 

 oliva ; spira elevata; suturis valde impressis ; anfractibus instar octonis, planu- 

 latis ; apertura parviuscula, rhomboidea, intus albidil ; labro acuto, sinuoso ;. 

 columella alba, et contorta. 



Hab. French, Broad and Tellico Creeks, Tenn., J. Clark and Prof. Christy. 

 Florence, Ala., G. White. Noxubee River, Miss., Dr. Spillman ; and Clinch 

 River, Tenn., Dr. Warder. Coosa, Cahawba and Alabama Rivers, Ala., Dr. 

 Showalter. 



Trypanostoma Alabamense. Testa carinata, crassiuscula, subfusiformi, tene- 

 broso-cornea; spira subattenuata ; suturis regulariter impressis; anfractibus 

 instar octonis, planulatis, inferne striatis; apertura parviuscula; rhomboidea, 

 intus albida; labro acuto, sinuoso; columella inferne incrassata et valde 

 contorta. 



Hab. North Alabama, Prof. Tuomey. Florence, Ala., Rev. G. White. 



Trypanostoma ligatum. Testa carinata, fusiformi, subcrassa, inflata, nitida, 

 vittata vel evittata, luteo-oliva; spira, obtuse conica; suturis impressis; an- 



1862.] 



