194 



Genus Ixodes 



Female (Figs. 185, 186), more or less fed : L. 29 to 5, W. 18 to 

 33 mm. Body brown, with a few scattered hairs. Scutum (I. 13 to 1*4, 

 w. 1 to 1*8 mm.) dark brown, long oval with slightly sinuous posterior 

 border ; cervical grooves shallow, almost reaching the margin ; no lateral 

 grooves ; numerous fine shallow punctations. Venter brown, with 

 scattered hairs, long at the sides ; vulva between coxae IV ; anal grooves 

 nearly reaching the posterior border and slightly divergent ; spiracles 

 round, whitish. Capitulum (Fig. 186) fairly long (09 mm.), base tri- 

 angular, with piriform porose areas far apart ; palps with article 2 

 concave externally (whence " cavipalpus ") owing to lateral prominence 

 proximally ; hypostome long and narrow with a crown of small teeth 

 followed by dentition 2 | 2. (Digit ; see Fig. 185 B.) Legs as in J, but 

 coxae I— II close together, III distant from II, and IV more distant from 

 III ; coxa I pointed, II-IV with straight posterior borders. 



Fig. 186. I. cavipalpus ? : capitulum in (A) dorsal and (B) ventral aspects. (Nuttall 

 and Warburton, 1908, Fig. 3.) 



Description based on (N. 245) 2 fs and 7 ? s from a baboon (Cyno- 

 cephalus 6a6wTO),!Kansanshi, N .W. Rhodesia, 1. 1907 (Dr A. Yale Massey) ; 

 (N. 353) 1 £ from a native baby, Benguella Hinterland, Angola, XII. 

 1907 (Dr F. Creighton Wellman) ; and (N. 394) ^s, $s from the last- 

 named source, 1908. 



This species strongly resembles /. pilosus (p. 221), but may be 

 readily distinguished from it by the anal grooves and the absence of 

 a lateral groove on the $ scutum. 



