200 



ARACHNOIDEA. 



Haemaphysalis rosea. Copied from 

 figure in Koch's Ubersicht. 

 Magnified and natural size. 



Rhipicephalus seneg-alensis. Copied from figure 



in Koch s Ubersicht. _ Magnified and 



natural size. 



Haemaphysalis rosea {Kach). 



Shining yellowish-red ;. palpi and 

 legs yellow; scutellum blood-red j 

 abdomen with three elongate grooves. 

 From the West Indies. 



Genus Rhipicephalus. 



Eyes flat and muddy ; palpi as broad 

 as long, and with an angle 

 on the external side. 



Rhipicephalus Senega- 

 LENSis {Koch), 



Flat ; the scutellum 

 showing tawny wine-red j 

 abdomen dark wine-red ; 

 mouth and legs blood- 

 red. From Senegal and 

 Egypt. 



Adenopleura cOiMPRESSUM {Macalisier, Quarterly Journal of Micr. Science, 

 n. s. xii. p. 287, pi. xiv. 1872.). — 24. Enlarged sketch of ditto, copied 

 from Prof. Macalister's figure. 



The specimens from which Pro- 

 fessor Macalister described this new 

 form of Ixodes were obtained from 

 between the scales of the pangolin of 

 West Africa (Manis multiscutata) ; it 

 is minute for an Ixodes, being only 

 "^ the sixteenth of an inch in length. It 

 is perhaps with reason, therefore, that 

 Professor Macalister has made a new 

 genus for it. 



Adenopleura compressum. 



i-i6th of an inch in length. 



Copied from Prof. Macalister's fii 



