242 



exotic. — 88 species, inhabiting this country, have been described by 

 Mr. Lea in his papers read before the Society. Besides these, his 

 list of AticuIoscb (separated from Melania by Mr. Say) embraces 33 

 species. 



Mr. Lea proposed to change the following names used in his for- 

 mer papers, they being preoccupied. 



Melania plicatula, to M. Deshayesiana. 



Melania plicata, to M. MeuJciana. 



Melania exarata, to M. arata. 



Planorbis lens, to P. Brogniartiana. 



The following are descriptions of the new species embraced in this 

 paper. 



Melania Vanuxemiana. Testa, striata, obtuso-conica, solida, luteola, fasci- 

 ata ; spira breviuscula ; suturis impressis ; anfractibus senis, subconvexis ; 

 columella superne incrassata ; apertura ovata, alba. Hab. Alabama. — Dr. 

 Foreman. 



Melania ovalis. Testa striata, fusiformi, solida, lutea, fasciata ; suturis valde 

 impressis; anfractibus senis, subconvexis; apertura ovata, constricta, intus 

 albida. Hab. Alabama. — Dr. Foreman. 



Melania Haysiana. Testa striata, subcylindracea, solida, luteo-fusca; spira 

 subelevata ; suturis impressis ; anfractibus planulatis ; apertura parva, ellip- 

 tica. Hab. Alabama. — Dr. Foreman. 



Melania excisa* Testa striata, subfusiformi, subcrassa, luteola; spira ovato- 

 conica ; suturis impressis ; anfractibus planulatis ; apertura superne excisa, 

 parva, elliptica, alba. Hab. Alabama. — Dr. Foreman. 



Melania Ordiana. Testa striata, pyramidata, crassa, tenebroso-fusca ; spirit 

 exerta ; suturis valde impressis ; anfractibus planulatis ; apertura. rhombi for- 

 mam habente, parva, albida. Hab. Alabama. — Dr. Foreman. 



Melania brevis. Testa striata, subcylindracea, subsolida., lutea; spir& bre- 

 viuscula; suturis impressis ; anfractibus planulatis ; columella, superne incras- 

 sata,; apertura ovata, alba. Hab. Alabama. — Dr. Foreman. 



Melania oliva. Testa striata, elliptica, solida, fusca; spira breviuscula; su- 

 turis valde impressis; anfractibus convexis; columella, incurvata, superne in- 

 crassata ; apertura ovata, alba. Hab. Alabama. — Dr. Foreman. 



Melania Foremani. Testa tuberculata, pyramidata, subcrassa, luteo-fusca; 

 spira elevata; suturis enormiter lineatis; anfractibus novenis, planulatis; 

 apertura producta. ad basim angulata et canaliculata, intus albida. Hab. 

 Alabama. — Dr. Foreman. 



Melania tor quata. Testa tuberculata, subfusiformi, nitida, subtenui, lutea ; 

 spira subelevata; suturis impressis; anfractibus septenis, subconvexis; aper- 



* This species is remarkable for a deep cut in the superior portion of the 

 lip, extending about one-fifth of the way round, resembling the genus Pleuro- 

 toma. When the animal shall be observed it may be found to be different 

 from that of Melania; in which case Mr. Lea proposes the name of Schizosto- 

 ma for it. 



