Sherborn seems not to list the borealis "Beck" Lyell.  The impression
I get is that the figure and name are found in different publications,
but I haven't yet been able to track down the actual details, nor have
I quickly located Morch.

I've hit a similar type of problem with regard to "Lymnaea" bulla.  It
was originally published as a nude name from eastern India (and
misspelled in the text, as butta).  Much later (though not too late to
qualify as a description), an illustration identified as bulla  was
published with somewhat different (though vague and ambiguous)
locality data.  Fortunately, pretty much any interpretation puts it in
the same genus, as it is a type species.


--
Dr. David Campbell
425 Scientific Collections
University of Alabama
"I think of my happy condition, surrounded by acres of clams"

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