. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. 56 Annals of the Carnegie Museum. On the specimen here figured the length of the pygidium is only .64 of the width, and the axial lobe of the thorax is narrow for an Isotelus, being only .42 of the total width insti^ad of .50 as in /. Fig. 3. Isotelus maximus Locke. Photograph of a specimen in the Carnegie Museum, to show long genal spines and rounded pygidium. Isotelus sp. Plate XV, figure 3. Two specimens obtained by Mr. Narraway at Mechanicsville differ from the typical form of Iso
. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. 56 Annals of the Carnegie Museum. On the specimen here figured the length of the pygidium is only .64 of the width, and the axial lobe of the thorax is narrow for an Isotelus, being only .42 of the total width insti^ad of .50 as in /. Fig. 3. Isotelus maximus Locke. Photograph of a specimen in the Carnegie Museum, to show long genal spines and rounded pygidium. Isotelus sp. Plate XV, figure 3. Two specimens obtained by Mr. Narraway at Mechanicsville differ from the typical form of Isotelus gigas in having nearly semicircular pygidia, relatively narrower thoracic axes, and smaller eyes. The larger specimen retains the cranidium, seven thoracic segments, and the pygidium. The cranidium is smooth, without glabellar furrows. The dorsal furrows are shallow and extend a little ahead of the eyes. Palpebral lobes small, a little further forward than in specimens of Isotelus gigas of this Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Museum; Carnegie Museum of Natural History. [Pittsburgh] : Published by authority of the Board of Trustees of the Carnegie Institute
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
