Is this a Cypraei Erosa Erosaria?

[richard]

The 1st item is 40mm. Found in the Philippines. Is this a  Cypraei  Erosa Erosaria?
2nd item 42mm also found on a beach in the Philippines.
<a href="http://www.badongo.com/pic/5133242" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/5133242">http://www.badongo.com/pic/5133242</a><!-- m --></a>
<a href="http://www.badongo.com/pic/5133244" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/5133244">http://www.badongo.com/pic/5133244</a><!-- m --></a>
<a href="http://www.badongo.com/pic/5133246" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/5133246">http://www.badongo.com/pic/5133246</a><!-- m --></a>
<a href="http://www.badongo.com/pic/5133249" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/5133249">http://www.badongo.com/pic/5133249</a><!-- m --></a>
<a href="http://www.badongo.com/pic/5133252" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/5133252">http://www.badongo.com/pic/5133252</a><!-- m --></a>

[paul monfils]

Yes this is Cypraea (Erosaria) erosa. The other is an immature Strombus (Canarium) urceus.

[richard]

 Paul Monfils thank you very much for your info. Do you know just how large the Strombus (Canarium) urceus can grow?
Thanks again Richard

[dave r]

I have them up to about 70mm.
Dave

[paul monfils]

Hi Richard,

Strombus urceus is usually about 35 to 45 mm in length when mature, but there is a slender, tall-spired form that reaches at least 70 mm.  I have often wondered if that form should be described as a different species, but so far no-one has done so.  Here's a picture of that form (66 mm):

<a href="http://members.cox.net/paulcyp/urceus.jpg" target="_blank"><!-- m --><a class="postlink" href="http://members.cox.net/paulcyp/urceus.jpg">http://members.cox.net/paulcyp/urceus.jpg</a><!-- m --></a>

[dave r]

Yes Paul, that is the form I have that is around the 70mm mark. I agree with you, it should be a named form as I have seen no intergrades.
Dave