HELIX. 357 
synonyms, indeed, were virtually quoted by Linneus himself in 
the ‘ Fauna,’ through his reference to ‘‘ Pet. Mus. 69, No. 784 ;” 
since Petiver’s species was defined solely by the two figures of 
Lister here mentioned, and his subsequent delineation refers 
to number 734 of his published list. Indeed, he actually and 
directly cited the drawing in Lister’s ‘ Historie’ by the name 
attached to the figure, but the 68 was misprinted 62 in the 
second edition cf the ‘Fauna Suecica.’ The description in the 
‘Museum Ulric’ agrees with the known characters, and even 
alludes to the almost imperceptible granulation. 
In one of his many copies of the ‘Systema’ the following 
remark has been subjoined by Linneus: “ Mirum quomodo 
hee humore suo calcem rodit; anne hec lithontripticon 
esset.”’ 
Helix oculus-caprt. 
It has long been suspected, from the language of the ‘Museum 
Ulrice,’ that this shell was a member of the ‘genus Cyclostoma, 
but the exact species has not yet been determined with cer- 
tainty. The specimen marked for it in the Linnean cabinet, 
and which answers to the description of it in the ‘Systema,’ 
proves to be the C. involvulus of Sowerby’s Monograph (Thes. 
Conch. i. pl. 26, f.14). Certain individuals of the same species 
correspond exactly with the details in the ‘Museum Ulrice,’ 
although the expression “ elabra,” often erroneously held equi- 
valent to “levis,” but used by our author, in the opposite page 
of the same publication, in conjunction with “ transversim 
striata,’ might seem opposed to the identification. Of the 
three figures cited as illustrative in the ‘Systema,’ that of 
Petiver (Gaz. pl. 76, f. 6) is the best, and was not 1mprobably 
designed for the species: the other two must be suppressed, 
for the rounded coils of the Helix wngulina, supposed to be 
represented by them, suit not the expression “ subcarinata,” 
and the concave spire attributed by Argenville to the shell he 
has delineated is adverse to the “‘spira elevata” of the ‘Museum.’ 
Klein’s copy of Rumphius, originally referred to oculus-capri, 
was more fittingly referred to wngulina in the final edition of 
