80 NOTES ON THE "SCOTS GRAY " MOSQUITO 



DESCRIPTION OF PLATES OF CULEX MUCIDUS 



ALTERNANS. 



Fig. 1.— Egg, X 33. 



2. — Larva escaping from egg, x 25. 



3. — Larva newly born, x 10. 



4. — Larva after first moult, x 15. 



5. — One of larval mouth brushes with toothed bristles, x 80. 



6. — Larval mandible, x 100. 



7. -Larval mouth organs, mentum or chin in centre, mandible* 



at sides with serrated lancets between, x 125. 

 8. — Pupa, X 5i. 

 9. — Long section through pupa, showing insect fully developed, 



X 10. 

 10.— Male Head, x 10. 

 11.— Female Head, x 10. 

 12. — Lancets partly separated from central sucking tube, showing 



their fiattish form, x 25. 

 13. — Pump with portion of lancets, x 30. 

 14. — Pump in situ in long section of head, x 25. 

 15. — Pump separated into ita three parts, x 35. 

 16. — Pump, tran.? verse or end view, x 30. 

 17. — Pump, end showing chitinous fibres, x 133. 

 18. — Poison glands, x 27. 



19. — Single gland suspended from human hair, i 25. 

 20. — Poison cup or reservoir on base of mandible, x 133. 

 21. — Tips of labrum epipharynx, through which the blood passes, 



and of mandible with fine poison tube in centre, x 100. 

 22. — Air sac, stomach, egg sacs and intestinal organs of female, x 8 

 23. — Bowel expansion, with six heart-shaped organs, x 25. 

 24. — Long section, showing wing-muscles in thorax, and eggs filling 



the whole of the abdomen, x 10. 

 25. — Portion of eye with image of lamp flame in each cell, i 77. 

 26. — Wing on dark ground, x 5J. 

 27. — Fringing scales on wing edge, x 166. 

 28.— Haltere, x 100. 

 29. — Claw on foreleg, x ] 00. 



30. — Tracheal tubes on exterior of stomach, x 100. 

 31.— Scales, x 100. 



32. — Spermathecas and mucus gland, x 83. 

 33. — Prothoracic spiracle showing internal hair fringe, x 100. 

 34. — Ovipositor, x 83. 

 35. — Male insect, x 2. 

 36. — Proboscis and palpi, x 14. 

 37. — Female insect, x 2. 

 38. — Last segment of male, shovang claspers and hooks, x 25. 



