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SPECIES OF THE SYSTEMA. 
Helix (ucoriune. 
The references of Linneus to the snails delineated in 
Gualtier are peculiarly infelicitous. The one cited in illustra- 
tion of the present species does not answer to the “apertura 
fusca” of the very brief description, which is consequently too 
meagre for the purposes of definition. In the cabinet of our 
author the banded variety (Rossm. Icon. L. 8. Conch. f. 549) of 
Helix lactea is marked for this shell, and corresponds with the 
diagnosis. The term “subrotunda” at first seems adverse to 
the determination, but Linneus has likewise applied it to the 
preceding shell, whose form is nearly similar. It is not expe- 
dient to change the name of lactea on account of this identifica- 
tion, which could not reasonably have been surmised, for in 
truth the H. lucorwm of Miiller (as further defined by Pfeiffer) 
seemed, from the globose figure of Gualtier, a much more 
specious identification. Yet the engraving alluded to (often 
ascribed to pomatia) does not represent the shell described 
by Miiller, whose species, moreover, has not its aperture 
oblong nor entirely fuscous, as demanded by the ‘Systema,’ 
but merely a brown peristome, for the interior is declared 
to be white (“apertura intus alba”). Consequently that shell 
must be termed, for the future, the lucorwn of Miiller, and 
not of Linneus. 
Helix grisea, 
The box thus marked in the Linnean cabinet is filled with 
examples of the H. aspersa of Miller (Turton, L. and F. W. 
Shells, f. 35). This fact agrees with the recorded opinion of 
Gmelin, Dillwyn, &c., who probably followed tradition in their 
identification ; for the diagnosis, although not untrue of dead 
and bleached individuals, was by no means characteristic, and 
the reference to Gualtier (pl. 1, f. B) would rather mislead than 
otherwise. It was probably from the likeness of that figure to 
a gigantic cincta, that Pfeiffer, in his Monograph of Helices, has 
