Tab. 18. 



1. Diaphana hyalina, Turt. 



2. — expansa, Jeffr. 

 3a— b. - hiemalis, Gould. 

 3c & 4. — globosa, Lov. 



5. Cylichna propinqva, M. Sårs. 



6. Scaphander puncto-striatus, Migh. 



7. — lignarius, Lin. 

 8a— b-e. Philine pruinosa, Clark. 



