HELIX. 379 
changed the name of the latter to grisea; that species, however, 
is neither to be found in the collection, where the type of grisea 
is recorded to be present, nor was it the snail delineated by 
Gualtier, whose rude engraving reminds one of an aged pomatia, 
for which, indeed, it has been quoted. Would it not be better 
to drop altogether the name of so imperfectly defined a species 
as the present one ? 
Helix Hxeuastoma. 
The universal recognition of this snail (Helix hemastoma, 
Crouch, Introd. Conch. pl. 14, f. 17) renders its absence from 
the Linnean collection of no importance. As no figures had 
been cited in illustration of the species, it was not uninteresting 
to remark in the interleaved copy of the ‘Systema,’ which 
had belonged to the younger Linné, the reference “Seb. Mus. 
il. t. 40, f. 6, 7,” which is confirmatory of the received identifi- 
cation. 
Helix Decollata, 
The presence of this shell (Draparnaud, Moll. France, pl. 4, 
f. 27, 28) in the Linnean collection, wherein it is the sole 
species that agrees with the descriptions of the ‘Systema’ 
and the ‘Museum Ulrice, supports the received opinion of 
its identity with the Bulimus decollatus of modern writers. 
“List. 17” has been correctly added by our author to his 
published synonymy. 
Helix subeplidvrica. 
As in the entire collection of Linneus only a single species, 
the Truncatella Montagui of Lowe (Brit. Mar. Conch. f. 75), 
agrees with the description of this shell, and that, too, ex- 
actly, no doubt can be entertained of the typical value of the 
