Place of publication:
W. H. Emory, Not. milit. reconn. 157, fig. 8. 1848, nom. inval.?
Comment:
nom. provis.? Engelm.: "I must consider it as a distinct species to which I would give the name of O. violacea." and "my descriptions ... and the names given by me, must remain doubtful till we are able to obtain some more data ..."