INSECUTOR INSCITI^ MENSTRUUS 41 



Brunner's key, those forms having the intermediate tibiae 

 spined above. To place it further in the above-mentioned key 

 would necessitate a general recast of the arrangement, a task 

 not considered advisable at this time by reason of the lack of 

 sufficient material to make such a recast satisfactory. 



Description ( $ ) . — Head smooth, about as broad as the front 

 portion of the pronotum ; eyes slightly elongate and quite prom- 

 inent ; fastigium of the vertex surpassed somewhat by the an- 

 tennal scrobse, elongate-triangular, narrowly rounded apically, 

 longitudinally sulcate dorsally, the margins elevated basally 

 into a pair of oblongly rounded tubercles with a light yellowish 

 ocellar spot on the outer aspect ; basal segment of the antennae 

 with an elevated apical tubercle on the inner dorsolateral mar- 

 gin, the second segment with a smaller basal tubercle; antenna! 

 scrobffi moderate, slightly surpassing the fastigium of the ver- 

 tex ; facial scutellum smooth, apically narrowing to a narrowly 

 rounded fastigium separated from that of the vertex by a 

 broadly rounded notch ; just below the apex of the facial scu- 

 tellum there is an oblong light yellowish spot similar to that on 

 the outer aspect of the basal tubercles of the fastigium of the 

 vertex. Pronotum entirely beset with coarse tubercles, the disk 

 rounded into the lateral lobes without signs of lateral carinae 

 except slight shoulders on the metanotum ; lateral lobes some- 

 what longer than high, lower margin straight and nearly hori- 

 zontal, angles rounded, humeral sinus broadly rounded ; pro- 

 notal disk very broadly rounded at both extremities, posteriorly 

 mesially notched and almost truncate ; posterior transverse 

 sulcus very distinct, a little behind the middle ; a short median 

 carina on the posterior edge of the metanotum and a short lon- 

 gitudinal furrow at the point of crossing of the posterior trans- 

 verse sulcus ; prosternum with a pair of blunt thorns ; meso- and 

 metasternal lobes triangularly rounded ; metasternal pits so 

 close together as to be practically merged, a dividing ridge pres- 

 ent only anteriorly. Legs moderately slender, the fore femora 

 one and one-half times as long as the pronotum ; anterior tibiae 

 perfectly flat above and unarmed, the foramina shell-shaped 

 and but little inflated ; beneath these tibiae are armed with seven 

 spines on each margin, those of each row nearly opposite the 



