172 PROCEEDINGS OF THE ACADEMY OF 



fractibus septenis, convexiusculis, ultimo pergrandi, ligata apud peripheriam ; 

 apertura grandi, rhomboidea, intus obsolete vittata ; labro acuto, sinuoso ; 

 columella inferne incrassata, ad basim rufo-maculata, valde contorts. 



Hab. Tennessee, Prof. Troost. Cumberland, River, C. T. Downie. North 

 Ala., Pruf. Tuomey. Ohio River at Cincinnati, U. P. James. 



Trypanostoma Pybasii. Testa obtuse carinata, obtuse conica, solida, bi- 

 vitta, viridi-fusea. ; spira. obtasa; suturis valde impressis ; anfractibus instar 

 octonis. convexiusculis ; apertura parva, rhombica, intus alba, et vittata ; labro 

 acuto, valde sinuoso ; columella inferne incrassata et valde contorta. 



Hab. Tuscumbia, Ala., B. Pybas. 



Trypanostoma olivaceum. Testa carinata, subfusiformi, subcrassa, olivacea ; 

 spira subobtusa ; suturis impressis ; anfractibus instar octonis, planulatis ; 

 apertura subgiandi, rhomboidea, intus albida ; labro acuto, sinuoso ; columella 

 inferne incrassata et valde contorta. 



Hal. Tombigbee River, Mississippi, W. Spillman, M. D. 



Trypanostoma monilifertjm. Testa tuberculata, crassa, pyramidata, vel 

 luteola vel virente, vittata vel evittata. ; spira elevato-pyramidatfi : suturis 

 irregulariter impressis ; anfractibus instar denis, planulatis, inferne striatis, 

 interdum obsolete sulcatis, ad peripheriam tuberculatis ; apertura subgrandi, 

 rhomboidea, intus vel albida vel salmonia, plerumque bivittata ; labro acuto, 

 valde sinuoso; columella inferne incrassata et valde contorta. 



Hab. Tennessee, Prof. Troost and Mr. Anthony. Florence, Ala., Rev. G. 

 White, Mr. Pybas and Mr. Thornton. Cumberland River, Dr. Powell. Ohio 

 River, near the mouth, in Illinois, J. Donaldson. New Harmony, Indiana, Mr. 

 Carley and Mr. Sampson. Warrior River, Ala., Prof. Brumby. 



Trypanostoma Lewisii. Testa sulcata, subtenui, elevato-conica, tenebroso- 

 fusca vel cornea, vittata ; fpira attenuata ; suturis paulisper impressis ; an- 

 fractibus instar undenis, planulatis; apertura parva, subrhomboidea, intus 

 vittata ; labro acuto, paulisper sinuoso ; columella inferne paulisper incrassata 

 et valde contorta. 



Hab. Peoria, Illinois, J. Lewis, M.D. 



Trypanostoma moriformi. Testa sulcata, subcylindracea, solida, uno-vittata, 

 cornea, spira obtuse conica; suturis impressis; anfractibus instar novenis, 

 impressis, canaliculatis ; apertura parviuscuia, rhombica, intus alba et uno- 

 vittata ; labro acuto, valde sinuoso; columella inferne incrassata et valde 

 contorta. 



Hab. Oostenaula River, near Rome, Ga., Rev. G. White. Tenn. River, Dr. 

 Spillman. Tuscumbia, Ala. B. Pybas. 



Trypanostoma viride. Testa subsulcata, subcrassa, subfusiformi, olivacea; 

 spira obtuse conica; suturis valde impressis; anfractibus septenis, convexis, 

 ultimo subcanaliculato ; apertura subgrandi, rhomboidea, intus vel purpurea 

 vel albidA; labro acuto, sinuoso; columella inferne incrassata et paulisper 

 contorta. 



Hab. Tennessee, Prof. Troost. 



Trypanostoma Showalterii. Testa, striata, interdum laevi, valde exerla, 

 crassa subcylindracea, vel cornea vel fusca, interdum inferne vittata; spira 

 valde elevata ; suturis valde impressis; anfractibus novenis, subpianulatis ; 

 apertura parva, rhomboidea, intus vel albida vel salmonia; labro acuto, parum 

 sinuoso ; columella interne incrassata et valde contorta. 



Hab. Cahawba River, Ala., E. R. Sho waiter, M. D. Tuscaloosa, Ala., Dr. 

 Budd. Oostenaula River, Ga., Rev. G. White and Bishop Elliott. 



.Trypanostoma Anthonyi. Testa rugoso striata, pyramidata, crassa, luteo- 

 olivacea ; spira elevata ; suturis rugoso-impressis ; anfractibus instar novenis, 



[April, 



