BRITISH MUSEUM (NATURAL HISTORY) 



?"Jr A Economic Series No. 6 



W(o(o 



E^T SPECIES OF 



ARACHNIDA and MYRIOPODA 



(SCORPIONS, SPIDERS, MITES, 

 TICKS AND CENTIPEDES) 



INJURIOUS TO MAN 



BY 



4r4W" STANLEY HIRST 



Assistant in the Department op Zoology 



WITH 26 TEXT-FIGURES AND 3 PLATES 



LONDON 



PRINTED BY ORDER OF THE TRUSTEES OF THE 



BRITISH MUSEUM 



SOLD AT 

 The British Museum (Natural History), Cromwell Road, S.W. 7. 



AND BY 



B. Quaritch, 11, Grafton Street, New Bond Street. W. 1 . 

 and DuiiAU & Co., Ltd., 37, Soho Square, W. 1. 



J 9 1 7 

 All rights reserved} 



