172 



Genus Ixodes 



a line with the posterior border of coxae IV. Sexual grooves uniting 

 in front of the vulva, straight and divergent. Anus not far from the 

 posterior border ; anal grooves almost parallel. Spiracles large, circular, 

 whitish, equidistant from the vulva and anus. Capitulum long (1 mm.), 

 with dark brown base, the appendages brown-red. Base about as 

 broad as long, subtriangular ; porose areas large ; auricula forming 

 a flattened retrograde tuberosity. (Digit 1 .) Hypostome (Fig. 166) 

 narrow, lanceolate, long, 4 1 4 then 3 ] 3 files of 9-10 teeth, the external 

 very stout, the median less so; the internal narrow, long and blunt. 

 Palps long, broad, flat ; article 3 almost as long as 2. Legs large, stout, 

 the two last articles of pair 4 extending beyond the posterior border of 

 the body, brown, except the distal extremity of the intermediary articles, 

 which is white ; short hairs on all the articles. Coxae large, contiguous ; 

 coxa I bears a long spine at the postero-internal angle; a very short 

 spiniform prominence at each of the posterior angles of all the coxae. 

 The movable articles are slightly larger distally. Tarsus 1 long, almost 

 as long as articles 4 and 5 combined, tapering abruptly at the distal 

 pseudo-articulation ; tarsus 4 shorter, tapering abruptly ; pad two- 

 thirds the length of the claws. 



Description based on 4 ?s found on Mustela flavigula in Sumatra by 

 H. O. Forbes (British Museum). 



Fig. 165. Fig- 166. 



Fig. 165. J. spinicoxalis J : capitulum (mutilated) and scutum, coxae and part of basis 



capituli. (Sketch from the type in the British Mus. Original, C. W. del.) 

 Fig. 166. /. spinicoxalis ? : hypostome x 115. (Neumann, 1899, Fig. 6.) 



1 Digit 160 n long; dorsal process elongate, parallel to digit, crescentic, with two 

 retrograde points; external article large, longer than half the digit, with six or seven 

 teeth, the 3-4 anterior ones small, equal, the three others increasing in size, the basal 

 very stout. 



