446 TRANS ACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Fig. 11. Diagram for the purpose of showing the 

 relative positions of the mouth-parts to one 

 another when viewed from the ventral surface. 

 x circa 100. 



Fig. 12. Ventral aspect of the apex of the 2nd maxilla? 

 (labium). This figure and the succeeding one 

 are from preparations which have been depig- 

 mented to show the sculpturings of the cuticle. 

 x 160. 



Fig. 13. Dorsal aspect of labium and clypeus. x 160, 



Plate II. 



Fig. 14. Dorsal aspect of the maxilluke, the lingua and 



the left first maxilla — soft parts removed. 



x 360. 

 Fig. 15. Dorsal aspect of right mandible. x .'360. 

 Fig. 16. Vertical section of the integument, together 



with a, parietal extension of the fat-body. 



From the ventral region of the meso-thorax. 



x 800. 

 Vertical section of the integument passing 



through the base of a hair and a trichogenous 



cell. x 800. 

 Mass of fat-body from the thorax : excretion 



scarcely yet commenced. x 400. 

 Mass of fat-body from the abdomen : excretion 



actively taking place. x 400. 

 Mass of fat-body from the abdomen : excretion 



far advanced. x 320. 

 Longitudinal and vertical section of the ventral 



tube. x 200. 

 Apex of antenna showing fine branches of 



antenna] nerve passing to sensory organ and 



hairs, x 180. 



Fig. 



17. 



Fig. 



18. 



Fig. 



19. 



Fig. 



20. 



Fig. 



21. 



Fig, 



22 



