PLATE XVI. 



Thor cilia brunnea. 



Fig. 1. Female seen from left side. 



2. Anterior antenna of same. 



3. Anterior antenna of male. 



4. Posterior antenna. 



5. Mandible and palp. 



7. Anterior foot- jaw. 



8. Posterior foot-jaw. 



9. Swimming foot, one of third pair. 



10. Last thoracic segment, with fifth pair of feet 

 and first two abdominal segments. 



