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6 MONOGRAPH OF BRITISH LAND AND FRESHWATER MOLLUSCA. 
Sup-GENuS Cryptomphalus Agassiz. 
Helix aspersa Miiller. 
1674 Cochlea vulgaris major, hortensis, maculata et fasciata Lister, Phil. Trans., 
vol. ix., no. 1105, p. 99; f. 5. 
1678 Cochlea vulgaris major, pulla, maculata et fasciata, hortensis Lister, Hist. 
Aonme) Anges ps lle pls dis, ta 2: 
1774 Helix aspersa Miiller, Verm. Hist., ii., p. 59, no. 253. 
1777 =— _ hortensis Pennant, Brit. Zool., iv., p. 186, pl. Ixxxv., f. 129. 
1789 = — Jlucorwn Razoum., Hist. Nat. Jorat, i., p. 274. 
1789 — grisea and variegata Gmelin, Syst. Nat., p. 3650. 
1832. — (Helicogena) aspersa Férussac, Hist. Moll. Terr. et Flav. 
1837) — (Acavius) aspersa Gray’s Turton’s Man., p. 128, pl. iv., f. 35. 
1855 — = (Cryptomphalus) aspersa Moq.-Tand., Hist. Moll., ii., 174, pl. xiii., ff. 14-32. 
1861 — spumosa Lowe, Aun. and Mag. Nat. Hist., vii., p. 111. 
1778 Cochlea vulgaris Da Costa, Test. Brit., p. 72, pl. iv., f. 1. 
1797 —- vrestitutoris Humphrey, Mus. Calonn. 
1837 Cenatoria aspersa Held, Isis, p. 911. 
1866 Pomatia as) ersa Tryon, Amer, Journ. Coneh., ii., p. 322. 
ISTORY.— Helix aspersa (as- 
persa, besprinkled) has been 
regarded by some authors as the 
Helix lucorum of Linné;— while 
Ginelin, who edited the thirteenth 
edition of Linné’s “Systema Nature,” 
referred our species to Helix grisea, 
and it may be noted that Mr. Hanley, 
who so thoroughly investigated the 
Linnean cabinet of shells, found a 
box of shells therein of [eliza aspersa 
labelled Helix grisea; he, however, 
points out that the Linnean diagnosis 
of that species does not agree with 
living specimens of aspersa, though 
not untrue of dead and bleached 
individuals, and suggests that the 
name grisea be abandoned. 
Mr. Rimmer hazarded the probable 
suggestion that the name aspersa 
applied to this species by Miller 
f/ was a slip of the pen for aspera. 
apr difler Colonel Montagu has remarked 
that Dr. Turton has confounded the 
synonyms of aspersw with those of hortensis, not considering the former 
as an English shell, and therefore quoted this shell of Lister, Pennant, 
and Da Costa for hortensis. 
his species is dedicated to the memory of Dr. Martin Lister, F.R.S., 
the author of the first systematic account of the British land and freshwater 
mollusca and one of the illustrious trio of British naturalists, who—a 
century before Linné—investigated the biological sciences upon modern 
scientific lines; Dr. Lister’s own investigation of the mollusca taking full 
cognizance of the internal structure of the animal as well as the external 
morphology of the shell. 
