Dear CONCH-Lers,
         I am working on an Atrina from the northern Gulf of Mexico that has
been trawled from 90 - 120 fathoms and attains a shell length of approximately
60 centimeters (2 feet).  I need to see some comparative material of a couple
of similar species:  Atrina maura (Sowerby, 1835) and Atrina oldroydi (Dall,
1901), both from the Eastern Pacific.  Abbott in American Seashells 2nd
edition, states that A. oldroydi may be a synonym of A. maura, but his
illustration of A. maura is actually the illustration Dall used in his
description of A. oldroydi.   I would appreciate any comments, and even more
so the loan or opportunity to purchase specimens of these two "species".
Thanks in advance.
 
Douglas N. Shelton
Alabama Malacological Research Center
2370-G Hillcrest Road #236
Mobile, Alabama 36695
U. S. A.