J. Rennie and C. H. Sutherland 
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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. 5 
shows the terminal part of sheath containing moult of second larval stage. The post-abdominal 
spiracles ( s .) 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 bucco-pharyngeal apparatus of third-stage larva; a. dorsal process; b. cephalo- 
pharyngeal sclerite; c. hypostomal sclerite; d. mandibular sclerite; e. 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. 
