Linda
In fact they are very similar. If in good conditions both are shiny and
the outer color is the same. In perryi the spire is shorter,  the
aperture is smaller and the siphonal canal is longer, near the rear
canal the outer lip make a stronger angle with a larger body whorl near
the shoulder.  Because of this it looks more with ranzani than lotorium.
Lotorium have two dark brown blotches near the rear canal and in perryi
they are absent or faded.
Looking to my specimens from Mozambique these are the differences I
note.
Best regards
Carlos Carvalho                   www.shellscarvalho.com

-----Mensagem original-----
De: Conchologists of America List [mailto:[log in to unmask]] Em
nome de Linda Bush
Enviada: sexta-feira, 12 de Novembro de 2004 20:30
Para: [log in to unmask]
Assunto: Cymatium (Lotoria) species

Hello, Listers!

I have in front of me a Cymatium lotorium, and a supposedly Cymatium
perriyi.  I notice that the latter is shiny, as are some of the pictures
I find on the Shell Catalog website.  But, if a lotorium were treated
with acid it might very well become similar to the "perryi," including
the shine that results when some Filipinos process a shell with acid, a
process which is very common.

Are there any characteristics to distinguish between real shells of the
two species?  I have the data on the lotorium, but not on the perryi.

Thanks,
Linda

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