374 Miscellanies. 



U. carinifera. The complanatus also. 



U. Georgina. , do. 



U. clava. The scalenia of Rafinesq,ue, and the modioliformis 

 of Say. 



U. recta. The prae/oji^iw of Barnes : rec^a, therefore, has 

 precedence. 



U. naviformis. The cylindricus of Say, whose name has 

 precedence. 



U. glalrata. The complanatus. 



U. nasuta. ■ A young specimen of the gihbosus of Barnes. 

 It is not the same with the nasutus of Say. As Lamarck described 

 the shell before Barnes, he has a claim for the species ; but having 

 employed a name already applied in the genus, he loses it. The 

 name of Barnes must therefore stand. 



U. ovata. The ovatus of Say. var. b is supposed to be the 

 occidens of Lea. 



U. rotundata. The suborhiculata of Lamarck. The glob- 

 ulus of Say, and the sub-globosus of Lea. 



U. littoralis. The semirugata of Lamarck from Bagdad, and 

 the incurvus of Lea, from Gibraltar, belong to this species. 



U. nana. Supposed to be littoralis also. 



U. delodonta. Suspected to be the lacteolus of Lea. 



U. sulcidens. A compressed complanatus from Connecticut River. 



U. rQstrata. An elongated variety of the pictorum. 



U. Batava. This is distinct from pictorum. 



U. nodulosa. A young individual of the ovata of Donovan. 

 It is a European shell, and Lamarck's habitat, Lake Cham plain, is 

 an error. 



U. varicosa. A young specimen of the Alasmadonta mar- 

 ginata of Say. 



U. granosa. A true species. 



U. Virginiana. A poor specimen of the radiatus. 



U. luteola. l^he siliquoides of Barnes. Lamarck is in error 

 respecting the locality. His name has precedence. 



U. angusta. A distinct species. 



U. manca. A pictorum. 



U. cariosa. The two specimens described are, the one a bad 

 specimen of the cariosus of Say, and the other a bad one of the 

 Alasmadonta marginata of Say. One of the habitats, Lake Erie, 

 is an error. 



