PLATE 19. 



Figs. 1-3, 5, 6, 9. Lophomenia spiralis. X 35; Figs. 4, 7, 8, 10-15. Herpomeninaplatypoda. X 60. 



Figs. 1, 2, cross sections of much curved specimen of Lophomenia spiralis. X -15. 

 Fig. 3. Section beliind pharynx. 



Figs. 5, 6, 9 (same species) correspond to lines B, C, A, fig. 6, pi. 8. 



Figs. 4, 7, 8, cross sections of Herpomenia platypoda along lines A, C, B in fig. 1, ]>1. 8. X 00. 

 Figs. 10, 14. Sections through posterior end of H. platypoda along lines D, E, (which should incline 

 to left) fig. 3, pi. 8. 



F_ig. 12. Section through dorso-terminal sense organ. X 205. 



Fig. 13r Section through salivarj- ducts, showing entrance of ductules from gland cells. 



Figs. 11, 15. Longitudinal sections through posterior end of H. platypoda. 



