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A noph eles Maculipennis 
DESCRIPTION OF THE PLATES. 
PLATE IX. 
Fig. 1. Dorsal aspect of the head of a larva of Anopheles maculipennis showing certain of 
the muscles. 
Fig. 2. Transverse section through the head across the line x—y in the preceding 
figure. 
Fig. 3. Typical transverse section through the abdomen and passing through one of the 
ventral nerve ganglia. 
Fig. 4. Lateral view of the spiracles and their supporting skeleton. 
Fig. 5. Transverse section through the eighth abdominal segment together with the 
spiracular lobe. (Reconstruction from several sections.) 
Fig. 6. Transverse section through the ninth abdominal segment showing the muscles 
of the “ tail-fin.” (Reconstruction from several sections.) 
Fig. 7. Longitudinal and horizontal section through the spiracular lobe passing some 
distance below the level of the spiracles. 
Fig. 8. Do. passing just beneath the spiracles. 
Fig. 9. Transverse section through the heart and associated structures ; 6th abdominal 
segment. 
Fig. 10. Dorsal aspect of a portion of the heart showing alary muscles and pericardial 
cells ; 6th abdominal segment. 
Fig. 11. Rudiment of the male gonad from larva measuring 6'5 mm. long. 
Fig. 12. Rudiment of the female gonad from a larva measuring 6'75 mm. long. The 
numbers in this and the preceding figure represent the respective segments in which 
the organ lies, and the horizontal lines indicate the boundaries between those 
segments. 
Fig. 13. Transverse sections through three separate regions of the male gonad of a larva 
about 6 mm. long : (a) through the base of the terminal filament; (h) through the 
middle of the gonad ; (c) through the developing duct. 
Fig. 14. Outline figure of the rudiment of the male gonad in a larva 2'3 mm. in length. 
Fig. 15. Transverse section through the heart and associated cellular cords; anterior part 
of the thorax. 
Fig. 16. Do. through the heart and posterior prolongations of the supporting collar ; 
commencement of oesophagus. 
Fig. 17. Do. through the middle of the supporting collar together with the heart. 
Fig. 18. Do. through the cerebral commissure and the anterior termination of the 
heart. 
Fig. 19. Section of imaginal buds of wing and second leg of left side at an early stage in 
development. 
Fig. 20. Section through imaginal antennal bud and passing through the opening of the 
primitive invagination. 
Fig. 21. Longitudinal and vertical section passing through the cerebral commissure 
together with the terminal portion of the heart and the associated supporting 
collar. 
