NO. 13 STAPH YLINIDAE BLACK WELDER 4I 



relatively large pores close to it. The posterior face is more sparsely 

 punctured than the anterior. 



The femur of the mesothoracic leg is slightly longer and consider- 

 ably thicker than that of the prothorax. The anterior aspect bears 

 numerous moderately long setae which are much sparser at the base 

 and much shorter along the dorsal edge. The posterior face is glabrous 

 but is extremely minutely longitudinally striate. The ventral part of 

 the gonytheca bears a few scattered short setae. 



The tibia of the mesothoracic leg is very similar in form to that 

 of the prothoracic leg. It is nearly one-half again as long and ex- 

 ceedingly roughly sculptured. The terminal combs of setae are very 

 similar, and the other vestiture differs chiefly in being longer and more 

 dense. The large blunt setae are longer and more irregular in shape 

 and much more abundant. The calcaria are similar to those of the 

 metathoracic leg (fig. 81), 



The tarsus is almost exactly similar to that of the metathorax 

 (fig. 81). It is very slightly shorter and bears more of the large 

 terminal dorsal setae on each tarsomere. 



The metathoracic legs (fig. 81) are longer and slightly stouter 

 than the other legs, but the sculpture and vestiture are not as evident 

 as on either of the others. The coxa (ex) is short and very transverse, 

 being rather globular medially with a narrow lateral extension that 

 bears the pleural articulation (cxa), which is rather indefinitely as- 

 sociated with the tip of the episternum. The median proximal part 

 forms the articulation with the metasternum. The median distal part 

 articulates with the trochanter (tr) by two sets of condyles, one an- 

 terior and one posterior. The anterior aspect is sparsely clothed with 

 moderately fine setae which become denser and larger toward the apex. 

 There is a slight concavity extending diagonally across the coxa from 

 the median anterior angle and this irregular band is impunctate. The 

 posterior aspect is glabrous except for the median and apical areas 

 which are clothed similarly to and continuously with the anterior parts. 

 The caudal or ventral edge of the transverse lateral part is slightly 

 concave and bears an irregular row of small setae. 



The trochanter (fig. 81, tr) is rather oval in form with its proximal 

 ventral part extended into the interior of the coxa for muscle attach- 

 ment. It is immovably attached to the posterior side of the proximal 

 end of the femur as in the other legs. Its anterior surface is moder- 

 ately closely set with small setae, among which are a few of the tiny 

 pores. The posterior aspect is glabrous except for a few setae which 

 are continued around from the anterior side. The femur of the meta- 

 thoracic leg (fm) is tapered to a blunt point proximally and truncated 



