Arachnidn. 66] 



Order ACARI. 



Apart from a few casually received specimens of various 

 families from different localities, the collection of Acari, which 

 has never been systematically studied, consists mainly of 

 mens of the larger tropical Trombidiidse, of a considerable number 

 of mostly unnamed specimens of Ixodidse, and of Mr. A. D. 

 Michael's series of British Oribatidse, which was received in 

 1879 and 1888, and formed the basis of that author's monograph 

 of the British Oribatidse, published by the Ray Society. The 

 specimens, including the types of the species described in tin- 

 volume, are mounted upon 1 06 microscopical slides. 



Alphabetical List of Authors who have established Species 

 upon Specimens now contained in the British Museum. 



Butler, A. G. Kulczinski, W. 



Cambridge, O. P. Leach, \V. E. 



Cambridge, F. 0. Lucas, H. 



Gervais, Paul. Oates, E. W. 



Gray, G. R. Peckham, G .W. 



Guerin-Meneville. Pocock, R. I. 



GlJNTHER, A. PURCELL, W. F. 



Hansen, H. J. Simon, E. 



Hogg, H. R. Thorell, T. 



Keyserling, E. AYalckenaer. 



Kirby, W. AVaterhouse, C. 0. 



Koch, Carl Ludwig. White, A. 

 Kraepelin, K. 



List of the Principal Countries whence the Museum ha£ 



Received Arachnida, with the Names of the D s 

 or Collectors. 



EUROPE. 



Various Countries on the Continent: Keyserling'fi collection 



England: F. Walker; O. Thomas; R. T. P.»cock ; A. D. Michael. 



France (Brittany) : O. Thomas. 



Germany : Dr. Eger ; O. Thomas. 



Italy : O. Thomas. 



Spain and Balearic Islands: O. Thomas: Colonel JTerbury; G. C. 



Champion. 

 Madeira and Salvages Islands: \V. R. O. Grant. 



