[Cnidaria] Ectopleura crocea

[Annalise Nawrocki]

Peter,

I agree with Allen Collins and Peter Schuchert that they could be  
Ectopleura crocea. But they could also be Ectopleura larynx. I  
couldn't tell from the photos, but they should be distinguishable by  
looking at the female gonophores. Crocea's female gonophores have  
eight laterally flattened and kind of keel-shaped ridges that are  
distal, instead of the four more reduced processes that are  
characteristic of larynx. I would recommend you look carefully at the  
female gonophores to help ID since they are often mistakenly  
identified in the literature. Another dead give-away to distinguish  
the two is that larynx has very distinct perisarc annulations, and is  
also typically smaller. Petersen 1990 has a good description.

Best,

Annalise Nawrocki

On Mar 29, 2009, at 1:11 PM, cnidaria-request at uci.edu wrote:

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>   1. [Fwd: Interesting cnidarian....] (resteele at uci.edu)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 29 Mar 2009 11:11:01 -0700 (PDT)
> From: resteele at uci.edu
> Subject: [Cnidaria] [Fwd: Interesting cnidarian....]
> To: cnidaria at uci.edu
> Cc: pjbryant at uci.edu
> Message-ID:
> 	<a7652d662a1eed3c87bf6f88fdd24c7e.squirrel at webmail.uci.edu>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Can anyone help Peter (pjbryant at uci.edu) identify these hydrozoans?
>
> Cheers,
> Rob
>
> ---------------------------- Original Message  
> ----------------------------
> Subject: Interesting cnidarian....
> From:    "Peter Bryant" <pjbryant at UCI.EDU>
> Date:    Sat, March 28, 2009 6:26 pm
> To:      "Hans Bode" <hrbode at UCI.EDU>
>         resteele at UCI.EDU
>         "rcampbel-uci.edu" <rcampbel at UCI.EDU>
> --------------------------------------------------------------------------
>
> ....(attached) from the Marine Life Inventory at UNB this
> morning.  Can you help to identify it?
>
> THanks!
>
> P
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