PLATE I. 



Fig. 1. 1 O, 1 b. SCOLOFBITDBA OABTAOTBIOBPS. (Natural size. ) 



2. Bothroi-oi.ys Min.TiDKNTATUS. (Magnified.) 



3. Lithobius Amebicanus. (Magnified.) 



4. OPISTHEMBSA POSTICA. (Natural size.) One of the hind feet is a 



reproduced appendage. 



5. SCOLOPOORTFTOPS 8EXSPIN0SA. ( Natural size. ) 



6. ScOLOPENDRA POLYMOEPHA. (Natural size.) 



7. Mecistocephaltts lotbatct. 



8. Strhiamia Keii.Ki-rn'A. 



9. Stbigamia bothriopus. 



10. Male APFBB DAGBS OB OxiGABPIS PUNaTIOEFS. 



10 a. View of the other surface of the outer elaw of the same. 



11, 11 a. Male appendages of 1 ui.us CANADENSIS . 



