94 



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 maxillae 

 (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. 1-3. Dorsal aspect of labrum and clypeus. x 160. 



Plate II. 



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

 the left hrst maxilla — soft parts removed. 

 X 360. 

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

 Fig. 16. A^ertical section of the integument, together 

 with a parietal extension of the fat-body. 

 From the ventral region of the meso'-thorax. 

 x 800. 

 Fig. IT. Vertical section of the integument passing 

 through the base of a hair and a trichogenous 

 cell. X 800. 

 Fig. 18. Mass of fat-body from the thorax : excretion 



scarcely yet commenced. x 400. 

 Fig. 19. 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 

 antennal nerve passing to sensory organ and 

 hairs. x 180. 



