| 1 | Fragment of segment. Paratype of the species. Natural size |
| 2 | Small fragment of segment (× 3) to show character of scales Horizon and locality. Utica shale. Holland Patent, Oneida co., N. Y. |
Megalograptus welchi Miller
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| 3 | Walking leg. Cotype. Natural size |
| 4 | Fragment of walking leg. Cotype. Natural size |
| 5 | Postabdominal segment. Cotype. Natural size Horizon and locality. Richmond group (Liberty beds). Near Clarksville, Warren co., Ohio |
All figures are from photographs
The originals of figures 1 and 2 are in the National Museum, those of figures 3–5 in the museum of Chicago University. Figures 3–5 were furnished by Dr A. F. Foerste
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