CONTENTS. 



Preface ....... 



Systematic Index . . . 



List of Illustrations .... 



Class— ARACHNTDA. 

 Order — Scorpiones : 



Scorpions and their Stint. 



Order — Araneae (Spiders) : 



The Venom of Spiders . 



Order — Acari (Mites and Ticks) : 

 Acaei and Man 



Sub-Order — Vermiformia . 

 Family — Demodicidae 



Sub-Order — Astigmata 



Family — Sarcoptidae (Itch Mites) 

 ,, Tyroglyphidae 



Hub-Order— Heterostigmata 

 Family — Tarsonemidae 



Sub- Order — Prostigmata . 

 Family — Trombidiidae 

 ,, Cheletidae 



,, Tetranychidae 



„ Bdellidae 



Sub-Order — Mesostigmata 



Family — Parasitidae (Gamasidae) 



,, HOLOTHYRIDAE 



Super-Family — Ixodoidea (Ticks) 

 Family — Argasidae 

 ,, ixodidae 



Tick-Paralysis ...... 



MYRIOPODA. 



Centipedes and their Bite 



The Pseudoparasitism of Myriopoda in Man 



Literature ...... 



Index ....... 



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