Carpenter 1865 is available online through Google Books.
A critical bit of the paper for this thread, not quoted by Harry, is
that Carpenter explicitly identifies Opalia as a subgenus of Scalaria,
even though his usage within the description of borealis is as if it
were a genus. Other authors do even a better job of hiding whether
they regard a name as a genus or subgenus. This makes borealis
Carpenter a primary rather than secondary homonym.
--
Dr. David Campbell
425 Scientific Collections
University of Alabama
"I think of my happy condition, surrounded by acres of clams"
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