PLATE LII. 



Figs. 1-14. Corycceus varius, Dana. 

 Fig. 1. Female, seen from above ; a, lateral processes of third thoracic segment. 

 Fig. 2. The same, seen from left side; both magnified 40 diameters. 

 Fig. 3. Abdomen of female, seen laterally. 

 Fig. 4. Abdomen of male, seen from the front. 

 Fig;. 5. Abdomen of immature female, seen from the front. 

 Fig;. 6. Anterior antenna. 

 Fig. 7. Posterior antenna of male. 

 Fig. 8. Posterior antenna of female. 



Fig. 9. a, Mandible; a', a', apical processes; a", palp; b, maxilla. 

 Fig. 10. Anterior foot-jaw. 

 Fig. 11. Posterior foot-jaw. 

 Fig. 1 2. Foot of first pair. 

 Fig. 13. Foot of third pair. 

 Fig. 14. Foot of fourth pair. 



Figs. 15-19. CoryccBiis pettucidus, Dana. 

 Fig. 15. Female, seen from left side; magnified 80 diameters. 

 Fig. 16. Anterior antenna. 

 Fig. 17. Posterior antenna. 

 Fig. 18. Posterior foot-jaw. 

 Fig. 19. Abdomen and tail with attached spermatophores. 



