3oi 
two on each, side, are present in the male of Eurhipi- 
cephalus. The shape of the plates varies in different 
species. 
The Ventral Shields. —These are, as a rule, less 
conspicuous sclerites, which cover the ventral surface 
in the male. The arrangement of these plates, or 
sclerites, differs in the different species (Fig. 96). 
Fig- 97 - {Left figure) Female tick {Hyalomma). Scutum = 
black , the white spots are the eyes. D.S.P. = dorso sub-median 
porose areas. 
{Right figure) Posterior ventral extremity of a tick {Aponomma) ; 
A = anus ; C. 3. = coxa of fourth leg ; S — stigma 
Marginal Festoons. —Also most marked in the males 
of certain species, notably in Amblyomma (Fig. 96), 
where they are eleven in number. The median festoon 
in some males ( Eu. decoloratus. annulatus^v. caudatus ) 
forms a short but distinct tail (Fig. 96, bottom right- 
hand corner). 
The Genital Opening. —Close behind the rostrum, 
on the ventral surface, is the opening of the genital 
