FAMILY 3. CYCLOSTOMACEA. 9] 
PUPINA, Vignard. 
Testa cylindracea, subturrita, luculenter polita, spira plus minusve de- 
pressa, apice obtuso ; anfractibus quinque ad sex, penultimo inflato, 
ultimo paululim coarctato ; apertura circulari, marginibus disjunc- 
tis, labro incrassato, subreflexo, canali aut fissura infundibuliformi 
propé ad columellam plerumque inciso. Operculum corneum, orbi- 
culare, spirale. 
The genus Pupina, which is comparatively but little known to collect- 
ors, was proposed some years since by Vignard for the reception of a 
solitary species, supposed to have been found upon the bank of a lake or 
river in New Guinea: another was subsequently discovered by Grate- 
loup, and he also, in determining its claim to the formation of a new 
genus under the title of Moulinsia, was struck by the peculiarities of the 
shell, probably without being aware that it had already excited the atten- 
tion of Vignard. The Pupinz were considered by Grateloup to partake 
of the characters of the Pupe, the Cyclostomata, and the Helicine ; De 
Férussac hazarded an opinion that they were allied to the Planazes or 
the Buccina: the views of the first of these authors were however subse- 
quently confirmed by Gray, upon discovering that these little mollusks 
are pulmoniferous and operculated. A funnel-shaped marginal canal or 
slit, which may be seen in most of the species near the columella, is evi- 
dently analogous to that in the shell of Helicina, but, like the slit in that 
genus, it is sometimes filled up, and cannot therefore be relied upon as 
a distinguishing character: Gray, nevertheless, proposes to distinguish 
such of the Pupine as exhibit the marginal fissure, by the new generic 
title of Calla. 
The shell of Pupina may be described as being cylindrical, somewhat 
turrited, and highly polished, the spire being more or less depressed, and 
rather obtuse at the apex: it is composed of about five or six whorls, the 
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