I. hexagonus 



179 



almost a regular hexagon, preceded by two small plaques behind 

 coxae I; median plate very broad; anal plate ogival ; adaual plates 

 with nearly parallel sides, but rather broader in front. Spiracle rather 

 large, rounded. Capitulum comparatively very small. Base pentagonal, 

 narrowing posteriorly, slightly broader than long. Palps medium, 

 articles 2 and 3 nearly equal in length. Hypostome of the same type 

 as that of canisuga (Fig. 204), but not emarginate, it is bluntly rounded 

 in front and the crenulations are more distinct and nearly meet in the 

 middle line. Legs : coxa I with a strong, sharp spine on its internal 

 border, and a very slight external spur; coxae II-IV with slight 

 external and internal spur. Tarsi humped; pad small. 



Female (Figs. 172-175): when gorged may attain 8x5 mm. 

 Scutum (12 x 1*4, or 15 x 1*4 mm.) a regular hexagon, except that the 

 posterior border is convex, broadest in the middle, scapulae sharp and 

 prominent ; cervical grooves faint, wavy, reaching posterior border ; 

 lateral grooves indicated by a slight ridge on the antero-lateral borders ; 

 numerous moderate punctations, often confluent in the anterior region; 

 smaller and discrete in the posterior region ; often a fairly distinct 

 subcircular depression on either side of the middle of the scutum. 

 Dorsum : punctations scarcely visible ; numerous short, white hairs. 

 Venter : vulva between coxae III ; genital grooves nearly straight, 

 slightly diverging ; anal grooves ogival, with sides parallel. Spiracle 

 large, subcircular. Capitulum of medium length ; base rectangular, 

 nearly twice as broad as long; porose areas pear-shaped, transverse, the 

 broader end internal, or sometimes oval, interval equal to or less than 

 their smaller diameter ; postero- lateral angles slightly salient (in some 



Fig. 172. . /. lie.r<itjtmu» ? : dorsum, venter, spiracle and tarsus 4. Specimen off 

 MmteUa rultjaris, Tring j F. J. Cox coll., 1908. (N. 668. Original, G. H.F.N, del.) 



