VI PREFACE. 



Newman, and Co., and all in the volume have been 

 printed by that firm. 



I have little doubt that time will show that this book 

 is not a perfect monograph of the British Orihatidw, 

 therefore I have inserted a list of all original notices 

 with which I am acquainted of species, or supposed 

 species, of Oribatidce not hitherto found in this country ; 

 and I have endeavoured, if possible, to mention some 

 leading characters of the species ; this, I hope, may be 

 useful to anyone finding a species not at present con- 

 sidered to be British. Although subsequent discov- 

 eries will doubtless add to our knowledge of the group, 

 I think the book has been prepared carefully, it cer- 

 tainly has been executed to the best of my ability, and 

 I believe that it contains as much information relative 

 to the family as the present state of science respecting 

 the Acarina permits. 



ALBERT D. MICHAEL. 



Cadogan Mansions, 



Sloane Square, London; 

 1st November, 1887. 



