I. boliviensis 



167 



to the genital grooves ; median shield with deep punctations, anal shield 

 a truncated oval, longer than wide, with sides curved and diverging; 

 adanal shield narrower posteriorly than anteriorly. Spiracles large, short 

 oval, whitish. Capitulum 525 fi long ; the base slightly broader than 

 long and broader anteriorly on the dorsal surface ; its posterior border 

 rectilinear ; auriculae forming slight prominences. Hypostome long and 

 broad, with lateral teeth united by transverse serrated ridges. Palps 

 broad, flat, articles II and III of the same length. Legs long Coxa I 

 with two parallel spurs, the internal very long, the external short ; two 

 flat spurs, short and separated, on coxae II and III ; a single external 

 conical spur on coxa IV. Tarsi long, tapering gradually. 



Fig. 160. /. boliviensis i (type): dorsum and venter, hypostome, spiracle and tarsus 4. 



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



Female (Fig. 161): Body oval, sides rounded, L. 2 - 6, W. 19 mm. 

 [partly fed], yellowish brown, the capitulum, scutum and legs maroon- 

 brown. Scutum oval, sides convex, longer than broad (To x 1*2 mm.) ; 

 cervical grooves almost obsolete ; lateral grooves represented by a 

 slightly visible depression ; fine punctations, mostly peripheral, a few 

 hairs mostly on the sides; scapulae sharp and prominent. Dorsum 

 with marginal grooves and some hairs. Venter with hairs scarcely more 

 abundant ; vulva between coxae IV ; anal grooves slightly diverging, 

 rounded in front. Spiracles large, circular, whitish. Capitulum 0'7 mm. 

 long ; base broader than long, with parallel sides, with slight cornua ; 



