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species out of the seven exist in any other. ‘They belong to a class 
ef mollusks of which few recent varieties are known, and may there- 
fore be highly esteemed for their conchological interest.” 
The next paper read was from Mr. G. B. Sowerby, jun., and is 
entitled ‘‘ Descriptions of nine species of the genus Pupina.” 
Gen. Purina, Vignard. 
Molluscum terrestre. 
Testa subcylindrica, vitrea, nitidissima, anfractibus quinque ad sex, 
penultimo inflato, ultimo paululim coarctato; apertura circulari, 
margine crasso, reflexo, ad basin columelle inciso, vel emargi- 
nato. 
Operculum corneum, spirale. 
The glassy enamel, which gives a brilliant polish to the small, 
terrestrial shells composing this genus, seems to distinguish them 
even from those species of Cyclostoma which most nearly resemble 
them, in having a pupiform shape, and a notch at the base of the 
columella. The question has been asked, ‘‘ Why not make this 
marginal notch the criterion of the genus?’ The answer is found 
in the following facts: first, the notch is found in Cyclostomata, 
which have no other character in common with Pupine ; second, 
that several Cyclostomata have a canal at the lower part of the whorl, 
which if continued would form a similar notch; third, that our 
Pupina lubrica, which could scarcely be separated from the genus, 
has but a very slight emargination. 
The first species described under this generic name was P. Ke- 
raudrenii, published by Vignard in the ‘ Annales des Sciences,’ 1829. 
Mr. Grateloup subsequently described P. Nunezii under the ge- 
neric name Moulinsia, neither of these naturalists heing acquainted 
with the operculum. 
All the species here described, with the exception of P. antiquata 
and P. Keraudrenii, were recently brought to this country by Mr. 
Cuming from the Philippines. 
* Species spira axe retrorso. 
Purina Nunezu. Moulinsia Nunezii, Grateloup, Ann. Soc. 
Linn. Bordeaux, 1840. P. Nunezii, Sow. jun., Thesaurus Con- 
chyliorum, part 1.f. 8,9, 10,11. Published May 1842. Testa 
globosa, obliqua ; aperturd magnd, margine valid? expanso, reflexo, 
complanato, incisurd triangulari penitis diviso; labio columellari 
concavo : anfractu ultimo prope aperturam subcomplanato. 
Long. °50; lat.°35 poll. 
Hab. ad insulas Samar, Luzon, Catanduanus et Siquijor, Philip- 
pinarum. 
Var. a. Fusca margine flavido. Samar. 
Var. 6. Flavida, margine aurantiaco. Albay, ins. Luzon. 
Var. c. Fulva rufescens. Ins. Catanduanus. 
Var. d. Alba, prope aperturam purpureo-cincta, margine flavido. 
Ins. Leyte. 
More globose than any other species, the spire turned backwards, 
