32? 



? . Stigmata triangular. Not easily distinguished 

 from Amblyomma, the following differences, however, 

 occur : 



(a) Rostrum without sharp angles as in Eurbipi- 

 cepbalus, as the postero-lateral border is very short, 

 and the antero-lateral slopes gradually into the 

 anterior. 



In Amblyomma, the antero-lateral and postero- 

 lateral sides of the rostrum form a uniform curve and 

 the antero-lateral curves gradually. 



(b) The plate on the ventral surface of the first 

 segment of the palpi is smaller than in Eurhipicephalus, 

 and bears a number of closely-packed bristles. In 

 Amblyomma it is reduced to a mere ridge bearing only 

 one or two bristles. 



(c) The eyes are situated about the middle of the 

 sides of the scutum : in Amblyomma generally in 

 front of this point by half or one-third of the length. 



(i) H. aegyptium. The speckled leg, or bont 

 (motley) leg tick. A very fine and large tick. Scutum : 

 punctation large, unequal and very irregular in 

 distribution, may be black or brown. Legs uniform 

 or bont (motley). Plate of the first palpal segment 

 elongated antero-posteriorly, has seven bristles. 



$ . Coxa I deeply divided, adanal shields with 

 hinder part of median border longer than the posterior 

 border. The median marginal festoon is small, tri- 

 angular, and often white. 



? . Eyes brilliant. Scutum as broad or broader 

 than long, numerous unequal punctations ; deeply 

 indented behind the eyes. Coxa I deeply divided. 

 Africa, S. India, Asia, Europe. 



Bionomics. Larvae and nymphs have not been 

 found on cattle ; they possibly infest birds. It is 

 common on the camel and horse. 



