. Smithsonian miscellaneous collections . SPIRIFERELLINA AND PUNCTOSPIRIFER(SEE EXPLANATION OF PLATES AT END OF TEXT.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 119. NO. 2. PL. 22. DIELASMA, SPIRIFERELLINA, AND HETERELASMA(SEE EXPLANATION OF PLATES AT END OF TEXT.) MITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 119. NO. 2. PL. 23

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Keywords: ., bookcentury1800, bookdecade1860, bookidsmiths, booksubjectscience