162 



Sph. consobrinum, Ferussac. = Sph. ovale. 



Sph. constrictiwi, Anthony. = Sph. transversum. 



Cyclas Corsa, Charpentier. = Sph. Brochonianum. 



Cyclas crocea, Lewis. = Sph. securis. 



Cyclas Cychlcolzii, Bientina; undescribed. 



Cyclas Cyrcetiojms, Valenciennes. = Corb. Cyrcenopsis, 



Sph. detruncatiim, Prime. = Sph. transversiim. 



Sp)h. Deshayesianmn, Bourguignat. = Sph. ovale. 



Cyclas diaphatiay Prime. = Sph. viodioliforme. 



Sph. distortum, Prime. = Sph. aolidulum. 



Cyclas dubia, Say. ^= P. Virginicum. 



Cyclas dubiosa, Say. = P. Virginicum. 



Cyclas duplicata, Pfeiffer. = P. duplicatum. 



Cyclas Dupontia, Ferussac. = Cyrenella Pupontia. 



Sph. eburneum, Anthony. = Sph. p)<^'>'tumeium. 



Cyclas edentula, Say, = Sph. striatinum. 



Cyclas elegans, C. B. Adams. = Sph. rhomboideum, 



Cyclas errans, Lewis. ; undescribed. 



Cyclas elliptica, Ferussac. ; undescribed. 



Cyclas Puphratica, Lamarck = Coj'b. fiuminalis. 



Cyclas fiavescens, McGillivray = Sph. corneum. 



Cyclas Jiuminea, Bosc. ; undescribed. 



Cyclas Jluviatilis, Bosc. ; undescribed. 



Cyclas Pontaineii, D'Orbigny. = C. Fontaineii. 



Cyclas fontinalis, Draparnaud. = P. pusillum. 



Cyclas fossarum, Krynicki. = Sph. corneum. 



Sph. fiiscatum, Rafinesque. = Sph. striatinum, 



Cyclas gibba, Alder. = P. obtusale. 



Sph. giganteum, Prime. = Sph. simile. 



Cyclas globosa, Megerle. = Sph. corneum. 



Sph. gracile, Prime. = Sph. transversum. 



Cyclas hammalis, Rafinesque ; undescribed. 



Euglesa Heyislo^viana, Leach ; a Sphwrium. 



Cyclas hermaphrodita, Mart. = Gralathea radiata.. 



Sph. Herminii^ Wald. =^ P. casertanum. 



Sph. inornatum, Prime. = Sph. striatinum. 



Cyclas Islandica, Lamarck. = Cyprina Islandica^ 



Cyclas isocardioides, Normand. = Sph. corneum. 



Cyclas lacustris, Draparnaud. = Sph. ovale. 



Cyclas Icevigata, Schumacker, is Corb ? 



Cyclas lasmampsis, Rafinesque. = Sph. simile. 



Cyclas Leachii, Ziegler. = Sph. corneum. 



Cyclas lenticularis, Normand. = P. casertanum. 



Cyclas limosa, D'Orbigny. = Corb. limosa. 



Cyclas littoralis, Ferussac. = Sph. modioliforme.. 



