1924 ] 
The Biology of Trichopoda pennipes Fab, 
75 
Young, B. P. 
1921. Attachment of the Abdomen to the Thorax in 
Diptera. Cornell Univ. Agric. Exp. Sta. Mem. 44, 
pp. 251-306, figs. 76. 
Explanation of Figures. 
Plate I. 
Fig. 1. Head of male — front view. 
Fig. 2. Head of male — side view, showing mouth parts. 
Fig. 3. Dorsum of male thorax. 
Fig. 4. Thorax of male — side view. 
Plate II. 
Fig. 5. 
Fig. 6. 
Fig. 7. 
Fig. 8. 
Fig. 9. 
Fig. 10. 
Fig. 11. 
Fig. 12. 
Fig. 13. 
Fig. 14. 
Wing of male, showing extent of ferrugineous spot. 
Cells labeled. 
Wing of female. Veins labeled. 
Tibia of metathoracic leg, showing fringe of feather- 
barbed setae. 
Terminal segments of tarsus of male. 
Abdomen of male — side view. 
Abdomen of female — side view. 
Abdomen of male — ventral view. 
Abdomen of female — ventral view. 
Male genitalia. 
Female genitalia. 
Plate III 
Fig. 15. Ninth abdominal sternite of male. 
Fig. 16. Egg. a, outline from side; b, from top; c, showing; 
hole in ventral surface after hatching. 
Fig. 17. Mature larva. 
Fig. 18. Cephalo-pharyngeal skeleton of larva, a and b, of 
second stage (?) larva, side and top views; c and 
d, mature of larva, side and top views. 
