WM. A. KEPNER. 



EXPLANATION OF PLATE I. 



FIG. i. Dorsal aspect of larva. 5*., stigma. X 10. 



FIG. 2. Lateral aspect of anterior end of larva, mo., mouth; m., mandible; 

 st., stigma. X 100. 



FIG. 3. Ventral aspect of posterior segment, d., tri-lobed disc with stout 

 spines. X 25. 



FIG. 4. Ventral aspect of posterior segment. The ventral lobe is laid back so as 

 to expose its six chitinous bars c'p'., and the two-lobed stigma-plate with its six 

 chitinous bars cp. X 25. 



FIG. 5. Lateral spect of posterior end of larva, d., tri-lobed disc; cp., chitonous 

 bar of stigma-plate. X 10. 



FIG. 6. Ventral aspect of anterior end of larva, m., mandible; mo., mouth; 

 st., stigma; ant., antenna. X 25. 



FIG. 7. Transverse section through base of tracheal process at level indicated 

 by arrow 7 on Fig. 8. c., cuticle; rp., reticulated plug; h., hypodermis; te., tracheal 

 epithelium. X 250. 



