PREFACE TO PART III 



TTTE have little to add to what has been stated in the Preface to 

 * * Part II. The present fasciculus follows in order and deals with 

 the genus Haemaphysalis of w^hich we recognize 50 species and varieties ; 

 three species {spinulosa, obtusa and numidiana) being included although 

 we are some^vhat doubtful as to their validity. Many species hitherto 

 regarded as valid are noted in our s3'nonymic lists. 



All of our descriptions are original ; they include three new species 

 and three new varieties, abeiTant forms and numerous hitherto un- 

 described stages of known species. 



The terms and signs used are the same as in Part II, pp. 127-182, 

 to which the reader is referred. 



Illustrations. 



We again lay stress upon the illustrations. Those appearing in 

 the six plates are republished from papers by Nuttall, Cooper and 

 Robinson, and Nuttall respectively, and comprise 29 figures in addition 

 to 144 figures in the text, making a total of 173 figures illustrating 

 this Part. Of these figures, 24 are taken from other authors, the 

 impressions being made from the original blocks. The majority of the 

 new text-figures were drawn under our direction by Mr N. Cunliffe. 



The genus Haemaphysalis has been very poorly illustrated hitherto 

 and we have sought to make good this deficiency, many species, 

 including their immature stages, being now figured for the first time. 



Of the 72 new text-figures 45 were drawn by N. Cunlifife 



24 „ ,, G. H. F. Nuttall 



2 „ ,, N. Cunliffe and E. Wilson 



1 was drawn by C. Warburton 

 Of the 72 previously ) 21 are from publications by C. Warburton 



Most of the figures were drawn to scale, others, not so drawn, are 

 described as " sketches." 



