Dear Patty,

here is what I can do for you

> 'Marginella' loebbeckkii (my shell such labelled
> looks like Cryptospira vertricosa)

Probably Cryptospira loebbeckeana, and Tomlin agrees
with you, he says "Rather doubtfully distinct from
ventricosa".

> 'Marginella' exilis

Volvarina exilis or Prunum exile (Gmelin, 1791)

> 'Marginella' monilis

Prunum monile (Linnaeus, 1758)

> 'Marginella' bernardi

Cryptospira bernardii (Largilliert, 1845), the generic
assignment was by Jousseaume, 1875, I've never seen
this species.

> 'Marginella' hindsiana

Volvarina hindsiana or Prunum hindsianum (Petit,
1851), Jousseaume (1875) classified this species as
Egouena, generally they end up as being Prunum. But it
is anybody's guess since I don't belive Prunum and
Volvarina to be natural genera, anyway.

> 'Marginella' deliciosa

Marginella deliciosa (Bavay, 1912) I can't help you
with the generic assignment, again I've not seen this
species

> about the differences
> between Prunum storeria and P. marginatum.

P. marginatum is larger, brown and, most important,
has a double varix on the lip (when seen dorsaly)

P. storerium samller, grayish brown and a single varix
on lip.

Hope it was helpful.

best wishes,

Paulino

=====
____________________________________
Paulino J. S. de Souza Jr., M.Sc.
Museu de Zoologia / USP
Caixa Postal, 42694 - CEP 04299-970
Sao Paulo, SP - Brasil

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