Gammarus lawrenaianus 

 Gammarus loausta* 

 Gammarus muc^ronatus 

 Gammarus oceanious 

 Gammarus palustris 

 Gammarus setosus 

 Gammarus tigrinus 

 Maera danae 

 Maera loven-i 

 Marino gammarus sp. 

 Marino gammarus finmarohious 

 Marino gammarus stoerensis 

 Melita sp. 

 Melita dentata 

 Melita nitida 

 Family Haustoriidae 



Aaanthohaustorius mitlsi 

 Amphiporeia lawrenoiana 

 Amphiporeia virginiana 

 Bathyporeia quoddyensis 

 Haustorius sp. 

 Haustorius arenarius 

 Haustorius canadensis 

 Pontoporeia sp. 

 Pontoporeia femorata 

 Protohaustorius deiahmannae 



1 2 3 4 5 6 M 



XX X X X X 



XX X + X X 



X X X X X X X 



X X X X X X X 



X X 



X X 



X X 



X X 



X X X X 



XXX 



X + X 



X X 



X (principallii 

 estuarine) 



X X 



X X 



X X 



X X + 



X 

 X 



X 

 X 



^G. locus ta group as defined by Stock, 196 7 



4-E-74 



10-80 



