26 



rita; suturis valde impressis; anfractibus octonis, carinatis, ad peripheriam 

 oompresso-tuberculatis ; apertura, magna, ovato-rhomboidea, intus albirta : 

 labro crenulato, sinuoso ; oolumella incurva, parum incrassatu, et valde contorta. 

 Hah.— Randall's Creek, near Columbus, Georgia, G. Hallenbeck. 



Goniobasis Canbyi. — Testa, tuberculata, plicatii, inferne transverse striata, 

 turrita, tenui, vel fusca vel dilute fusca, maculata ; spira, turrita ; suturis ir- 

 regulariter impressis ; anfractibus septenis, carinatis, ad peripheriam compresso- 

 tuberculatis ; apertura parva, rhomboidea, iutus maculata : labro crenulato, 

 sinuoso ; columella incurva, et valde contorta. 



Hni.—Lake Monroe, Florida, Wm. Canby, and Etowah and Tennessee Rivers. 

 Georgia, J. Postell. 



Goniobasis Couperii. — Testa tuberculata, plicata, inferne et superne striata, 

 turrita, tenui, tenebroso-fusca, ad basim vittata, ; spira turrita ; suturis valde 

 impressis,' anfractibus septenis, subcarinatis, ad peripheriam et supra com- 

 presso-tubercuiatis; apertura parvissima, subrhomboidea, intus tenebroso et 

 uno-vittata ; labro crenulato, valde sinuoso ; columella incurva, contort;! et 

 purpurescente. 



Hab. — Etowah River, Mr. Couper, by J. Postell. 



Goniobasis Downieana. — Testa tuberculata, subturrita, superne clathrata et 

 subcarinata, inferne transverse striata, tenui, dilute fusca; spira conoidea, 

 clathrata; suturis irregulariter impressis; anfractibus septenis, subcarinatis, ad 

 peripheriam et supra compresso-tuberculatis ; apertura submagna, ovato-rhom- 

 hoidea, intus albida ; labro crenulato, sinuoso ; columella incurva et contorta. 



Hab. — Etowah River, J. Postell. 



Goniobasis Trvoniana. — Testa granulosa vel striata, subfusiformi, luteo- 

 lusca vel tenebroso-fusca, crassa, robusta, vittata, raro evittatti, spirit obtuse 

 conoidea ; suturis irregulariter impressis ; anfractibus instar senis, ultimo per- 

 grandi ; apertura pergrandi, ovato-rhomboidea, intus valde vittata ; labro sub- 

 •renulato, vix sinuoso; columella paulisper incurva et vix contorta. 



Hab. — Oostenaula, near Rome, Bishop Elliott. Etowah River, Georgia, J. 

 Postell, and Ocoee River and Tennessee River, Rev. G. White. 



Goniobasis granata. — Testa granulosa, inferne striata, fusiformi, vittata, 

 subcrassa, fulgida, inflata, olivacea vel rubiginosa ; spira, depressa ; suturis ir- 

 regulariter impressis; anfractibus instar quinis, planiusculis, ultimo pergrandi ; 

 apertura grandi, ovato-rhomboidea, intus valde vittata ; labro parum crenulato. 

 vix sinuoso ; columella incurva et contorta. 



Hab. — Etowah River, near Canton, Georgia, Bishop Elliott and Rev. G. White. 



