304 SPECIES OF THE SYSTEMA. 
number of claimants for the specific appellation. Concholo- 
gists have generally assented to the appropriation of the term 
polita to the Turbo albus of Donovan (Helix polita of Montagu ; 
Eulima polita, Deshayes), and, in default of a rival with more 
valid pretensions, the decision of the majority may be followed. 
The specified size, “ grani hordei magnitudine,” is, however, 
inferior to the ordinary dimensions of that shell. 
Linneus, in the tenth edition of the ‘Systema,’ has denoted 
his possession of this species; but in the twelfth edition of the 
same book the mark which signifies its presence is wanting. 
Along with the Linnean shells was a paper containing some 
examples of Hulima (?) decussata (Mont.); but the words upon 
it plainly demonstrated that these were added subsequently to 
the decease of our author. My earlier set of notes alludes to 
the presence in the collection of a wretched example of EL. polita 
(Brit. Marine Conch. fig. 49), but I have failed in detecting it 
in a more recent examination. 
Turbo sauttlens, 
This species lies in the Linnean cabinet enclosed in a small 
paper envelope, on which the name is written at full length. 
The specimens, which correspond to the engraving (f. 94) in 
Gray’s ‘Manual of the Land and Freshwater Shells of the 
British Islands,’ belong to the Planorbis imbricatis of Miiller, 
as was surmised by Montagu and other writers upon the Tes- 
tacea. Deshayes, who, in the later volumes of his excellent 
edition of Lamarck’s ‘ Animaux sans Vertébres,’ has paid con- 
siderable attention to the Linnean species, proposes that its 
original specific appellation should be restored to this shell. 
