Smithsonian miscellaneous collections . (X4-) A very minute cranidium beside a larger form. U. S. National Museum, Catalogue No. (X 4-) Side outline of larger cranidium represented by fig. 2/.The specimens illustrated are from locality 3011, Upper Cambrian:Weeks formation, Weeks Canyon, House Range, Millard County,Utah. Millardia semele Walcott 166 Fig. 3. (X4-) Small cranidium showing tuberculated frontal S. National Museum, Catalogue No. ,a. (X4.) Ventral surface of a cephalon. U. S. National Mu-seum, Catalogue No. (X4-) Dorsal shield with 23 thorac

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Smithsonian miscellaneous collections . (X4-) A very minute cranidium beside a larger form. U. S. National Museum, Catalogue No. (X 4-) Side outline of larger cranidium represented by fig. 2/.The specimens illustrated are from locality 3011, Upper Cambrian:Weeks formation, Weeks Canyon, House Range, Millard County,Utah. Millardia semele Walcott 166 Fig. 3. (X4-) Small cranidium showing tuberculated frontal S. National Museum, Catalogue No. ,a. (X4.) Ventral surface of a cephalon. U. S. National Mu-seum, Catalogue No. (X4-) Dorsal shield with 23 thoracic segments. U. S. National Museum, Catalogue No. (Natural size.) The same specimen as that represented by fig. (X4-) Compressed dorsal shield on surface of shaly lime-stone. U. S. National Museum, Catalogue No. (Natural size.) The same specimen as that represented byfig. specimens ilkistrated are from locality 30 0, as given aboveunder figs. 2, 2a-g. SMITHSONIAN MISCELLANEOUS COLLECTIONS NO. 3, PL. 28. } ) .. *^. I im-. tiiW-r^ii

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Keywords: ., bookcentury1800, bookdecade1860, bookidsmiths, booksubjectscience