PLATE I.
| Fig. 1. 1 a, 1 b. Scolopendra castaneiceps. (Natural size.) |
| 2. Bothropolys multidentatus. (Magnified.) |
| 3. Lithobius Americanus. (Magnified.) |
4. Opisthemega postica. (Natural size.) One of the hind feet is a reproduced appendage.
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| 5. Scolopocryptops sexspinosa. (Natural size.) |
| 6. Scolopendra polymorpha. (Natural size.) |
| 7. Mecistocephalus lineatus. |
| 8. Strigamia epileptica. |
| 9. Strigamia bothriopus. |
| 10. Male appendages of Oligaspis puncticeps. |
| 10 a. View of the other surface of the outer claw of the same. |
| 11, 11 a. Male appendages of Iulus Canadensis. |
