. Bulletin - United States National Museum. CERAMASTER LETTFew IM^LA-HATIOH 0« ^UMt U. S. NATIONAL MUSEUM. 1, 2. Ceramasteh arcticus. 3. Pscudarchaster parelii alascensis (very younq). Fom Ca»vAHAT0« o ftJkTC »?( rAoc 390w

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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience