196 



Genus Ixodes 



front, punctate ; palps short, with very convex inner contour and 

 slightly convex outer contour; article 2 broader anteriorly than long, 

 article 3 about equal in length to article 2, article 1 somewhat sharply 

 prominent ventrally ; hypostome small, armed only on its anterior third 

 with 3 [ 3 rather obscure sub-equal teeth, about 4 per file. Legs: coxae 

 all bidentate, the inner spur of coxa I fairly long and strong; small 

 internal and external spurs on coxae II-IV, internal spur on IV almost 

 obsolete. Tarsi moderate, tarsus 4 tapering obliquely ; pad long. 



Female (Fig. 188) : Body elongate, with numerous fine punctations 

 and short white hairs. Scutum (15 x l'l mm. Nn.) much longer than 

 broad, broadest at the anterior third, where there are distinct lateral 

 angles ; cervical grooves shallow, long, diverging gradually ; lateral 

 grooves indicated by straight ridges reaching the border near the 

 posterior end of the scutum ; numerous small punctations, most evident 

 posteriorly ; scapular angles very sharp and prominent ; a few scattered 

 hairs. Venter: vulva between coxae III ; anal groove rather ogival in 

 front, with sides nearly parallel ; spiracle transversely oval. Capitulum : 

 base triangular dorsally, slightly longer than broad, the posterior border 

 straight, cornua absent. Porose areas large, of rather indefinite contour, 

 the interval less than their length. Palps long, article 2 half as long 

 again as article 3, article 3 rather pointed in front. Hypostome long, 

 sharply pointed, 2 | 2 then 3 | 3 sharp teeth. Legs as in the £ ', except 

 that the internal spine on coxa I is rather shorter and coxae III and IV 

 are without the internal spurs. 



Fig. 188. I. angustus ? : capitulum and scutum, capitulum in ventral aspect, coxae, 

 anal groove, spiracle and tarsus 4. Drawn from specimens N. 506 and 991. 

 (Original, F. M. H. del.) % 



