Proceedings of the United States National Museum . ACMAEA DIGITALIS ESCHSCHOLTZ For explanation of plate see page 2 U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. 66, ART. 17 PL. 17. Illustrations of Types For explanation of plate see page 37 U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. 66, ART. 17 PL. I!

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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience