DU DÉPARTEMENT DE L'AIN. I 5 I 



Sphccrium Brochonianum, Bourguignat ' 1 7 



— corneum, Linné 117 



— nucleum, Studer 1 i° 



— lacustre, Millier 1 1 8 



Pisidium pusillum, Gmelin i i Q 



— Gassiesiammi, Dupuy 119 



— casertanum, Poli 119 



— amnicum, Millier 120 



UNIONID^E 



Unio sinuatus, Lamarck 1 20 



— rhomboideus, Schroter 121 



— Barraudi, Bonhomme 121 



— Philippi, Dupuy 122 



— batavus, Lamarck 122 



— nantis, Lamarck 1 23 



— subtilis, H. Drouët 1 23 



— elongatulus, Muhlfeldt 123 



— Moquînianus, Dupuy 1 24 



— Requieni, Michaud 124 



— pictorum, Linné 1 2 5 



Anodonta encypha, Bourguignat 1 25 



— acyrta, Bourguignat 1 25 



— ponderosa, C. Pfeiffer 1 2G 



— Rossmassleriana, Dupuy 127 



— piscinalis, Nilsson 1 27 



— Servaini, Bourguignat 128 



— anatina, Linné 128 



— ■ psammita, Bourguignat 1 28 



— nycteriana, Bourguignat 129 



— parvula, H. Drouët . 1 29 



DREISSENIDjE 



Dreissena polymorplia, Pallas 129 



RÉSUMÉ ET CONCLUSIONS I 3o 



