PLATE XVII. 



Scolecithrix dance (Lubbock). 



Fig. 1. Male, seen from left side, magnified 40 diameters. 



Fig. 2. Anterior antenna of male. 



Fig. 3. Anterior antenna of female. 



Fie. 4. Posterior antenna. 



Fig. 5. Mandible and palp. 



Fig. 6. Maxilla. 



Fig. 7. Anterior foot-jaw. 



Fii>. 8. Terminal spines of one of the swimming feet. 



Fig. 9. Fifth pair of feet of male 



Fig. 10. The same, immature. 



Fig. 1 1 . Abdomen of female, seen from front. 



Fig. 12. The same seen from left side. 



