144 



EOLIS. 



A mollusca without a testaceous covering. 

 Eolis Cuverii Eolis lacinulata 



fasciculata peregrina 



minima affinis - 



TRITONIA. 



A mollusca without a shell. 



Tritonia Hombergii Tritonia arborescen. 



Triton ia coronata. 



SCYLL^A. 



A mollusca without a shell. 



Scyllaea pelagica. 



TETHYS. 



A mollusca without a shell. 



Tethys leporina Tethys fimbria, 



