Cecil
Your Dentalium appears to be Laevidentalium crocinum (Dall, 1907)
I have numerous beach collected specimens of this from the 80 Mile Beach
just South of Broome.
The 2 species most likely confused from this area are L crocinum & L.
lubricatum (Sowerby, 1860).
lubricatum is more likely to show annular swellings (stronger than growth
ridges) and may have a slight notch in some specimens. The aperture is
circular.
crocinum when fresh often has a yellowish coloration and the aperture is
very slightly dorsally flattened.
The size is about right for both species.
Laevidentalium erectum (Sowerby, 1860) is much narrower and has a distinct
notch and slit.
Geoff

>From: Cecil Bankston <[log in to unmask]>
>Reply-To: Conchologists of America List <[log in to unmask]>
>To: [log in to unmask]
>Subject: Dentalium from Western Australia
>Date: Wed, 20 Oct 2004 18:59:25 -0500
>
>I would appreciate some assistance in identifying a Dentalium I
>collected in Broome, Western Australia.  Its picture may be seen at the
>following URL:
>http://members.cox.net/cbankston/ShellImages.html
>
>I also still do not have definite ID's on the Lottiidae on the same page.
>--
>Cecil N. Bankston
>Baton Rouge, LA
>USA
>
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