572 IVAR TRÂGARDH 



with coxae III ; one pair on a line between coxae III and V ; 

 and one pair at the postero-lateral angles. 



The génital apertureis protectedbyanarrow, transverse, 

 oval shield, two and a half times as wide as it is long, sitnated 

 in a shallow excavation of the sternal shield. 



The vent ri-an al shield is essentially of the same shape 

 as in the female (fig. 85), but larger, extending forwards to 

 the posterior edge of coxae IV. The posterior part is, as in the 

 female, set off from the rest by two latéral incisions as a semi- 

 circular shield, in the centre of which the anal aperture is 

 situated, rising together with the siirrounding portion above 

 tlie level of the surface. 



The hairs are présent to the same number and in the same 

 position as in the female. 



The legs, are very characteristic through the great number 

 of hairs inserted on low, semispherical tubercles. 



Legs I (fig. 81 a) are more slender than the others ; coxa, 

 as usual, bent ujjwards like a knee in the middle; trochanter 

 with angular, projecting, ventral edge, provided with one short, 

 stout bristle dorsally, in the middle ; one sub-ventrally and 

 exteriorly behind the middle, and pointing perpendicularly 

 downwards, 4 small hairs in a ringnear the anterior margin. 

 Basifemur narrow, cylindrical, as long as it is wide, and half 

 as wide as the trochanter, distinctly demarcated from the 

 telofemur, with which forms an obtuse angle ; the latter widens 

 from its base towards the middle, whence it is of an even width ; 

 it bears a ventral row of 3 short, poniard-shaped, almost equi- 

 distant bristles, inserted on low tubercles ; dorsally, in the 

 middle, one similar, but only half as long, bristle ; and dorsally, 

 near the anterior margin, two similar ones, set closely together. 

 Genu of equal width throughout, twice as long as it is wide and 

 bent in an even curve downwards ; it has one stout bristle 

 ventrally, and distaUy, inserted on the anterior side of a knob- 

 like tubercle ; interiorly two bristles, one behind the other, on 

 low tubercles ; dorsally 5 to 6 smaller bristles. 



