— 68 — 



Mytilus cygnœus, var. Maton et Backett 53 



— (polymorphus) fluviatilis, Pallas 64 



Pisidium Foreli, Clessin 20 



— fossarinum, Clessin 19 



— Henslowianum, Jenyns. 19 



— ovatum, Clessin 20 



Sphœrium alpecanam, Bourguignat 18 



— Boettgerianum, Bourguignat 18 



— Bourguignati, Lallemanlet Servain 13-16 



— corneum, Scopoli 10 



— Dickinii. Clessin., 9 



— gallicum, Bourguignat 10-16 



— Letourneuxi, Bourguignat 15 



— Loirœ, Bourguignat 15 



— moenana, Kobelt 10 



— moenanum, Servain 10 



— Morini, id 11-16 



— rivicola, Bourguignat 13-16 



— Sandbergeri, Clessin 9 



— Servaini, Bourguignat 17 



1 ellina cornea, Linnœus 10 



— Henslowiana, Sheppard 49 



Uciio alpecanus, Bourgui;;nat 22 



— crassas, Philipsson 22 



— cyprinorum, Berthier 23 



— Féliciani, Bourguignat 22 



— Heckingi, id 26 



— Jourdheuili , Ray 24 



— limicola, Môrch 26 



— limosus, Nilsson 24 



— matronicus, Bourguignat 23 



— Muelleri, Rossmassier 26 



— rostrata, Lamarck 25 



— rostratellus, Bourguignat 25 



— rostratns id 25 



— rynchetinus, Lelournenx i'4 



— Socardianus. Bourguignat 23 



— tumidus, Philipsson 25 



— id. var. Heckingi. Colbeau 26 



— id. var. limicola, Clessin 26 



Imprimerie de Poissy — S. Lejay et C*. 



