Cl. V. N°* 5g et 60. 



- 2 9 



pallidus , Raf. , Monogr. 

 vittatus, id. (Cont. of a Mon.) 



(inflatus? selon Conrad.) 

 diploderma, id. id. 

 perplexus, id. id. 



granulatus, id. id. 

 metaplata , id. id. 

 decorticata, id. (Monogr.). 

 Cliffortiana, id. id. 



attenuata, id id. 



plateolus, ià.(Cont. of a Mon.) 

 tenellus, id. icf. 



pallens, id. id. 



rivularis, id. id. 



fontinalis, id. id. 



Chloris, id. id. 



castaneus, id. id. 



cordatus , id. {Monogr.) 

 cinerescens,id . ( Cont.ofa Mon. ) 

 lividus, id. id. 



flexus, id. id. 



marginatus , id. id. 

 brevialis, Sow.? 

 metallicus , Say (Mexique) . 



cuprinus, Lea 

 purpuriatus, Sajr. 

 tœniatus, Conrad. 

 trabalis, id. 

 nebulosus, id. 

 Cor, id. 

 cœlatus, id. 

 maculatus, id. 

 vibex, id. 

 Greenii, id. 

 penitus, id. 

 Masoni, id. 

 delumbis , id. 

 arctatus, id. 

 pectorosus, id. 

 rubellus, id. 

 furvus , id. 

 Raveneli, id. 

 icterinus,id. 

 tenebrosus , id. 

 altilis, id. 

 perovalis , id. 

 prasinus, id. 

 infucatus, id. 

 oviformis, id. 

 perovatus, id. 

 lienosus , id. 



* stramineus, id., Conrad. 



* arcus, id. 



t Blandingianus , Lea. 



* Camelus , id. 



* capillaris , id. 



(an U. personalns, Say?) 



* capsœformis, id. 



* confertus, id. 



* Conradicus, id. 



* Dromas, id. 



* fulvus , id. 



* Griffithianus, id. 



* Kirtlandicus , id . 



* modioliformis , id. 



* Nashvillianus , id. 



* Perdix, id. 



* pictus, id. 



* Ravenelianus, id. 



* Schoolcraftensis , id. 



* Shepardianus, id. 



* Sowerbianus, id. 



* Taitianus , id. 



* Troostensis, id. 



Cyclas. 



similis, Say. 



striatina, Lam. 

 sulcata, Lam. 



* sarratogea, Lam. 



* rhomboïdea , Say . 



* partumeia, Say. 



* virginica, GmeL (Tellina). 



T. pusilla, Dillw., Turton. 



* rcqualis, Raf. 



* lasmanpsis, id. 

 Caroliniana, Bosc, Lam. 



(Cyrena, Say.) 



* dubia , Say. 



* edentula, id. 



* transversa, id. 



* triangularis, id. (Mexique). 



+ bammalis, Raf. (Corbicula). 



* staminea, Conrad. 



Tremesia, Raf. 



* patelloides, Raf. 



Rangia, Desmoulins. 

 cyrenoïdes, Desm. 

 Gnathodon, Gray. 



