327 
? . Stigmata triangular. Not easily distinguished 
from Amblyomma , the following differences, however, 
occur :— 
(a) Rostrum without sharp angles as in Eurbipi- 
cephalus , 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. 
2 . 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. 
