Fig. 5 



PLATE XXV. FIG. i. Vertical longitudinal section of the body of a larva 

 of an insect; s, body-wall or skeleton; m, muscles; a, alimentary canal; h, 

 heart ; , nervous system ; r, reproductive organs. FIG. 2. Section of the 



body-wall ; c, cuticle ; h, hypodermis ; /, trichogen or hair-formingcell. FIG. j 

 Head of a bee and its appendages ; a. antenna ; c, clypens ; u, upper lip or 

 labrum ; m, mandible ; mx, maxilla ; /, lower lip or labium ; /, labial palpus. 



appendages ; a. antenna ; c, clypens ; u, upper li 

 m, ne ; mx, maxilla ; /, lower lip or labium ; /, labial pal 

 FIG. 4. Glands cf a honey-bee (pfter Girard); /, supracerebral glands ; 2, post- 

 cerebral glands; 3 thoracic glands. FIG. 5. The wax-plates (after Cheshire). 



