viii Preface 



The figures reproduced from Neumann are mostly printed from the 

 original blocks. These have all been purchased from the publishers of 

 his papers, or they have been duplicated from the original blocks with 

 the kind consent of Professor Neumann and of the editors of the various 

 journals in which they were published. Mr E. G. Wheler has generously 

 presented us with the blocks used in the illustration of his papers, 

 together with numerous unpublished photographs of ticks. Of the 

 figures by other authors, we have only chosen such as appear suitable 

 for the purposes of this book. 



We have decided to publish our whole Bibliography as it stands 

 in the form of a separate fasciculus ; should further references be 

 necessary in connection with succeeding parts, short supplementary 

 lists of references will be appended to the respective parts. We shall 

 be much indebted to any of our readers who may draw our attention 

 to errors and omissions. 



A cknowledgments. 



We are specially indebted to Professor L. G. Neumann, of Toulouse, 

 for the generous aid he has given us throughout, not only in placing his 

 valuable collection of types at our disposal, but also in helping us with 

 his advice and counsel. Our thanks are also due to Geheimrath 

 Professor W. Donitz, of Berlin, for friendly encouragement and ready 

 aid repeatedly given. 



The following Institutions and gentlemen have helped us very 

 materially by the loan of types and, in some cases, the gift of co-types : 

 The Berlin Museum (gift of /. schillingsi Neumann co-types, through 

 the courtesy of Geheimrath W. Donitz and Professor Dahl) ; the Paris 

 Museum (gift of " /. transversalis Lucas" co-types, through the courtesy 

 of Professor Bouvier) : the Hamburg Museum (loan of various types, 

 through the courtesy of Professor Kraepelin) ; the Bureau of Entomology, 

 U. S. Department of Agriculture, Washington, D.C. (gift and loan of 

 various specimens (some of which were identified by Mr N. Banks) 

 thanks to the courtesy of Dr L. O. Howard). The Hon. N. C. Rothschild 

 presented us with a very extensive collection of ticks from all parts of 

 the world, many specimens not having been identified. We, however, 

 discovered that the collection included Neumann's /. australiensis 

 (types) and /. nitens (types). The Rev. O. Pickard-Cambridge, F.R.S., 

 sent us, on loan, the unique remaining type of /. putus (a nymph) in his 

 collection. Professor A. Birula, of St Petersburg, presented a specimen 



