A host of Annulariids are native to North America (eastern Mexico). The most pervasive sp. on the Yucatan Peninsular are Choanopoma largillierti and gaigei.  Also Choanopoma cozumelensis and a handful of other species are native to the offshore islands of Mexico. I don't believe there are any records of Annulariids found inside the border of Texas, though Polygyrids and Bulimulids commonly range across the border. C. dentata seems to have a closer affinity to the Greater Antillies Annulariids where the family has its greatest radiation.
Rich
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www.worldwideconchology.com
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>   It is apparently the only member of the family
>   native to the USA - possibly to North America (not
>   clear on what straggler might have reached Mexico
>   from CA.
>

---- Original message ----
>Date: Thu, 6 Dec 2007 10:15:51 -0500
>From: "Harry G. Lee" <[log in to unmask]>
>Subject: Re: [CONCH-L] Chondropoma family???
>To: [log in to unmask]
>
>   Dear R. J.,
>
>   Conch-L'er Tom Watters has recently published a fine
>   monograph designed to answer questions like yours:
>
>   Watters, G. T., 2006. The Caribbean Land Snail
>   Family Annulariidae: A revision of the higher taxa
>   and a catalog of the species. Backhuys, Leiden
>   [viii] + 1-557 + 1 pl. + 8 pp. maps + 488 pp., 10
>   figs., 56 maps.
>
>   His placement is: Annulariidae Henderson and
>   Bartsch, 1920 [+ Chondropomatidae Henderson and
>   Bartsch, 1920]: Parachondria (Parachondria) Dall,
>   1905: P. (P.) dentata (Say, 1825)
>
>   It is apparently the only member of the family
>   native to the USA - possibly to North America (not
>   clear on what straggler might have reached Mexico
>   from CA.
>
>   Harry
>
>   At 10:10 PM 12/5/2007, you wrote:
>
>     Hello,
>
>     I am currently adding some specimens of
>     Chondropoma dentatum to my collection database.
>     They were collected in the Florida Keys.  My
>     question is, to which family do they belong?  I
>     have checked several sources and found the
>     following:
>
>     - Chondropomatidae
>     - Annulariidae
>     - Pomatiasidae
>     - Pomatiidae
>     - Amastridae
>
>     So, which is it folks?  Thanks.
>
>     R.J. Rego
>     Swansea, MA
>
>
>     Looking for last minute shopping deals? Find them
>     fast with Yahoo! Search.

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