IXODES RASUS 



ARTHUR (1956 correspondence). Preliminary study of a large amount 

 of material referrable to this name reveals that five species with 

 closed circular or pointed anal grooves are involved. Incidental- 

 ly, Neumann's type material, from hyrax has pointed anal grooves 

 Rio Muni specimens especially are easily distinguishable from all 

 others. Neumann's material from Togo (Berlin Museum), now at 

 Toulouse, is I. oldi, although Neumann had identified it as I 

 rasus. What Nuttill considered as I. rasus is a new species'' 

 that IS now being described. Schulze»T3^criptions of the I 

 rasus group are very vague and it is difficult to associate lis 

 so-called subspecies with available material. I. rasus and re- 

 lated species are no more variable than other I^odiT T^cies and 

 are easily separated once adequate criteria have been established. 



N.B The exact status of the pair of specimens illustrated 



^'■^"'cin^^^^ ^^^ ^° ^^^^ ^ °^ *^« ^i^gle "^ale from the Sudan 

 V.pa€e 550; has not yet been determined. 



IXODES SCHILLINGSI 



TENDEIRO (1955). Mozambique. Review of previous reports from 

 colony. 



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