40(5 



Genii s Haemaphy sails 



Fig. 407. H. leachi larva. Ventral aspect. Specimen raised in Cambridge. Nuttall, 

 X. 1913 a, Fig. 10. 



05 X 0*4 mm.^ attaining, when gorged, about I'o x 0'9 mm. Scutum 

 broader than long, with rounded posterior angle and rather sinuous 

 postero-lateral borders ; cervical grooves faint, converging behind. 

 Capitulum like that of the O. Legs : coxae unarmed ; tarsi tapering 

 to a point. 



It is unusual to find so close a resemblance between the capitula 

 of the immature and adult stages as is presented by H. leachi, and 

 the nymphs and larvae can generally be identified by this character 

 alone. On the other hand the adult tick is subject to considerable 

 variation both in size and facies. 



Our description is mainly based on numerous specimens from 

 Africa some of which have been raised in the laboratory in Cambridge. 



See further in the Section on Biology, p. 536. 



1 Measurements of larvae in mm. : 



Scutums 

 N. 1049 0-28 X 0-,32 

 0-24 X 0-32 

 0-24 X 0-32 

 0-23 X 0-31 

 0-23 X 0-29 



Bodies (unfed) 

 0-54 X 0-48 

 0-49 X 0-89 



