>Date:    Thu, 4 Jun 1998 12:34:36 -0400
>From:    Eddie Hughes <[log in to unmask]>
>Subject: Question about Crenella species
>
>Hello. I just joined the listserve, so I hope I am not out of line with an
>immediate question.  I am working with dredge samples that were taken on
>the Georges Bank region in the Northwest Atlantic and trying to key all
>organisms collected to lowest possible taxonomic level.  The two main
>texts I am using are Gosner's (1971)  and Abbott's (1954) and I do not
>feel all that confident in my identification of what I think are members
>of the Crenella genus as well as the Musculus genus.  I imagine that there
>has been some changes and regrouping since these books have been published
>and I was wondering if anyone could recommend any current, specific
>literature on
>this subject, as well as any overall field books for molluscs in the
>Northeast US region.  Thanks for any help.
 
 
Arcoperna Conrad is a senior subjective synonym of Rhomboidella and
Megacrenella, the genera used in Abbott, 1974 for relatively large, smooth,
Crenella-like taxa.  A. fragilis (Verrill, 1885) is listed by Abbott under
Crenella.
 
David Campbell
 
"Old Seashells"
Department of Geology
CB 3315 Mitchell Hall
University of North Carolina at Chapel Hill
Chapel Hill NC 27599-3315
919-962-0685
FAX 919-966-4519
 
"He had discovered an unknown bivalve, forming a new genus"-E. A. Poe, The
Gold Bug