another good source is the old walls book, conchs tibias and harps...


On 1/20/13, Allen Aigen <[log in to unmask]> wrote:
> I get so used to the internet that I forgot that I have Abbott, 1960,
> Indo-Pacific Mollusca, i:2  Strombus.  In case I was not the only one
> needing clarification, G. gibberulus (L. 1758) is an Indian Ocean species,
> larger (30-70 mm vs 28-55 mm); drab yellow to geyish tan with white spirals;
> columella white or with purple well within the aperture; spiral raised
> threads usually on the varix of the last whorl.  G. gibbosus (Roding, 1798)
> from the southern Pacific, is usually banded or flecked with bright yellows
> and browns; columella white or purple brown and elongate, always in view;
> varix threads weak or absent.  G. gibberulus albus, (Moerch, 1850)
> restricted to the Red sea, is smaller, paler, flushed with rose inside the
> last whorl, columella white or rose; narrow bar of purplish brown just below
> the suture on the dorsal side of the body whorl.
> Allen Aigen
>
>
> ________________________________
>  From: Allen Aigen <[log in to unmask]>
> To: Conchologists List <[log in to unmask]>
> Sent: Sunday, January 20, 2013 2:54 PM
> Subject: Gibberulus gibberulus vs G. gibbosus
>
>
> Can anyone tell me if these strombs are considered synonymous, or if not,
> what are the differences?  Bill Frank's Jax-shells
> (http://www.jaxshells.org/gibber.htm) shows G. gibbosus as more elongate,
> less distorted.  Is that the important criterion? Ulrich Wieneke
> (http://www.stromboidea.de/?n=Species.Gibberulus) gives both as valid
> species, but does not illustrate G. gibbosus. Poppe
> (http://www.conchology.be/?t=27&family=STROMBIDAE&species=Gibberulus%20gibbosus)
> seems to agree with Jax but not consistently.  Are there differences in
> where they occur?
> Thanks to all who help!
> Allen Aigen
> Staten Island, NY

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