On a new genus of Ixodoidea. 
415 
spiracles and towards the sub-median festoons ; cervical grooves 
deep, crescentic, concave outwards ; lateral grooves strongly 
marked, ending in front of the outermost festoon ; several large 
deep punctations, especially on the scapulae, in the middle of the 
pseudoscutum, in the lateral grooves, and in the posterior furrows ; 
eyes small, pale. Venter brown, sexual orifice large, between 
coxae II ; spiracles ear-shaped (Fig. 42) ; adanal shields recalling 
Fig. 43. <? capitulum, A dorsal, B ventral aspects. 
those of H. aegyptium, their curved anterior borders parallel to 
the anal groove, and nearly meeting behind the anus, punctate ; 
accessory shields small chitinous points, each connected with a 
remarkable series of four festoon-like bags lying behind the anal 
