. Smithsonian miscellaneous collections . (Slide No. 9, M. C. Z.) A drawing from a photograph ofthis slide was published by Walcott in 1881, pi. 1, fig. 9. 6. (X6.) Transverse section cutting obliquely down across the cephalon, hypostoma and cephalic limbs. For detaileddescription see text. (Slide No. 6, M. C. Z.) A drawingfrom a photograph of this slide was published by Walcottin 1881, pi. 1, fig. 6, and a photograph in 1918, pi. 26, fig. 11. 7. (X6.) Transverse section cutting obliquely down through from the first thoracic segment across the cephalon, hypo-stoma and cephalic limbs. For detai


. Smithsonian miscellaneous collections . (Slide No. 9, M. C. Z.) A drawing from a photograph ofthis slide was published by Walcott in 1881, pi. 1, fig. 9. 6. (X6.) Transverse section cutting obliquely down across the cephalon, hypostoma and cephalic limbs. For detaileddescription see text. (Slide No. 6, M. C. Z.) A drawingfrom a photograph of this slide was published by Walcottin 1881, pi. 1, fig. 6, and a photograph in 1918, pi. 26, fig. 11. 7. (X6.) Transverse section cutting obliquely down through from the first thoracic segment across the cephalon, hypo-stoma and cephalic limbs. For detailed description seetext. (Slide No. 38, M. C. Z.) A drawing from a photo-graph of this slide was published by Walcott in 1881, pi. 1,fig. 8, and a photograph in 1918, pi. 26, fig. 9. Ceraurus pleurexanthemus Green Fig. 8. (X4-) Transverse section of an enrolled specimen cuttingacross the thoracic coxopodites and the spiral arms of sev-eral exopodites. (Slide No. 147, M. C. Z.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 67, NO. 7, PL. 101. SECTIONS OF TRILOBiTES SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. b7, NO. 7, PL. 102


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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience