> how can I see the difference
> between:
> Tibia (Tibia) insulaechorab curta
> Tibia (Tibia) insulaechorab insulaechorab
> Tibia (Tibia) insulaechorab luteostoma

These are forms. There are no subgenera of Tibia, which is a strombid
genus which is comprised of 3 living species (fusus, insulaechorab,
melanochilus). Other tibiiform shells previously included in Tibia
belong elsewhere; I'll let Gijs Kronenberg elucidate, if he's
watching.


--
Regards
Andrew Grebneff
Dunedin
New Zealand
Fossil preparator
Mollusc, Toyota & VW van fan

----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------