vil. 
In the lists published for the last twenty or thirty years in this 
country, the land and fresh-water mollusca have been ruthlessly 
sundered from their allies, the marine, and, while considerable 
care has been expended on the first branch, the latter are still 
catalogued without alteration on the principles adopted in the time 
of Gwyn Jeffreys. If these notes tend in any measure to 
uniformity of nomenclature or arrangement (for in such matters 
we must still sadly say tot homines quot sententic) their object will 
have been achieved. 
CLASS CEPHALOPODA. 
ORDER DIBRANCHIATA. 
SUB-ORDER OCTOPODA. 
Octopodidee. 
Octopus, Lam., 1799. 
O. vulgaris, Lam. 
Eledone, Leach, 1817. 
E. cirrosa, Lam. 
SUB-ORDER DECAPODA. 
Sepiolide. 
Sepiola, Leach, 1817. 
S. Rondeleti, Leach. 
S. Atlantica, D'Or6. 
Rossia, Owen, 1834. 
R. macrosoma, D. Chiaje. 
R. glaucopis, Lovén. 
R. Oweni, Ball. 
Sepiide. 
Sepia, L. 
S. officinalis, Z. 
S. elegans, D'Orb. 
S. Ruppellaria, D'Oré. 
