150 



Genus Ixodes 



Female (Pis. IV and VII, Text-figs. 142, 143, 144) : Body oval, 

 with numerous short, white hairs; when replete may attain 11 x 7mm. 

 Scutum (VS x 1*15 or 1*4 x l - 05 mm.) dark brown, sub-pentagonal, 

 with rounded angles ; emargination slight ; scapulae rather pointed ; 

 cervical grooves superficial, barely reaching the posterior border ; lateral 

 grooves fairly distinct for about half the length of the scutum ; 

 numerous very fine punctations, especially on the posterior portion. 



Fig. 143. I. ricinus ? (partly replete) : dorsum, part of venter, tarsus 4, hypostome 

 and spiracle. Specimen from Coilessan, Scotland, D. MacKenzie coll., iv. 1905. 

 (N. 934. Original, G. H.F. N. del.) 



Fig. 144. I. ricinus ? : capitulum in dorsal and ventral aspects, x 70. Specimen from 

 Coilessan, Scotland. (N. 933. Original, G. H. F. N. del.) 



