PLATE C. 



Fig. 1- Macrothri.i' tenaicornis^ la. labrum. 



Fig. 2. do., first foot. 



Fig. 3. do., antennte of young. 



Fig. 4. Macrothrix pauper. 



Fig. 5. Macrothrix rosea, antenna of male. 



Fig. 6. do., spines of shell-margins. 



Fig. 7. do., post-abdomen. 



Fig. 8. Macrothrix laficornis, male. 



Fig. 9. do., semen cells. 



Fig. 10. Pasithea rectirostris, male antenna. 



Fig. 11. Macrothrix rosea, post-abdomen. 



Fig. 12. Macrothrix tenuicornis, " 



Fig. 13. Macrothrix rosea, post-abdomen of male. 



Fig. 14. Drepanothrix dentata, antenna. 



Fig. 15. llyocryptus sordichis, marginal spines. 



Fig. 16. do., antenna. 



Fig. IT. do., post-abdomen. 



Fig. 18. Ilyocryptiis spinifer, 18a. marginal spines. 



Fig. 19. do., antenna. 



Fig. 20. Macrothrix tenuicornis, heart and accompanying vessel? 



Fig. 21." Ilyocryptus spinifer, post-abdomen. 



