[ 17-3 ] 

 EXPLANATION OF PLATE XIV. 



Fig. 1. First-stage larva within the sheath. 



Fig. 2. Intersegmental area of first-stage larva showing spines. 



Fig. 3. Second-stage larva within the sheath. 



Figs. 4, 5, 6, 7 and 8. Different views of attachment of larva of B. geniculata to its host; Fig. 6 



shows the terminal part of sheath containing moult of second larval stage. The post-abdominal 



spiracles («.) and buccal apparatus (m.) of the second-stage larva can readily be made out; 



fig. 7 shows the sheath detached from the trachea, and fig. 8 shows the attachment to 



trachea (end view). 

 Fig. 9. Third-stage larva showing anterior end protruding from sheath. 

 Fig. 10. Bucco-pharyngeal apparatus of B. geniculata, first-stage larva. 

 Fig. 11. Bucco-pharyngeal apparatus of second-stage larva. 

 Fig. 12. Bucco-pharyngeal apparatus of third-stage larva. 



Fig. 13. Head and buccopharyngeal apparatus of third-stage larva; a. dorsal process; b. cephalo- 

 • pharyngeal solerite; c. hypostomal sclerite; d. mandibular sclerite; c. dentate sclerite; 



/. rudimentary antennae. 

 Fig. 14. Puparium. 

 Fig. 15. Rudimentary antennae. 



Fig. 16. Chitinous segmental hooks of third-stage larva. 

 Fig. 17. Post-abdominal spiracles of third-stage larva; a. chitinous hoop; b. opening of peri- 



spiracular gland ; c. peritreme. 

 Figs. 18 and 19. Post-abdominal spiracles of second-stage larva, showing three peritremes. 

 Figs. 20-24. Prothoracic spiracles of third-stage larva. 

 Fig. 25. Prothoracic spiracle of second-stage larva. 



