LIST OP ILLUSTKATIONS. 



FTG. 



l._Opliioclendrum aljietinum on Sertularia abietina 



2.— Eicinus of the Pygarg 



3.— Caligulus elegans, female : ditto, natural size 



4.— Different forms of the Bite of a Leech ... 



5. — Sucker and jaws 



6. — Anatomy of Leech 



7. — Antenna of Gnat ... 



8. — Gnat, male and female 



9j 10. — Lucilia hominivora 



11. — Ox-fly 



12. — Antenna of Ox- fly 



13.— Blue-fly 

 14.— Flesh-fly 

 15.— House-fly 

 16.— Bed-bug 

 17. — Louse 



18, — Louse — Suckers 



19.— Ditto— Claw 



20.— Flea (Pulex irritans) 



21. — Itch-mite ... 



22. — Ditto, female — back view ... 

 23.— Ditto, male— back view ... 

 24.— Geographical water-mite 

 25. — Book-mite ... 



26. — Chigoe, male 



27. — Ditto, head 



28. — Ditto, female 



29. — Phryxus Kathkei 



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