INSECUTOR INSCITI^ MENSTRUUS 51 



reaching the tips of the antennal scrobse and with a pair of 

 moderately elevated basal tubercles ; eyes round and prominent ; 

 basal segment of the antennje armed apically on the inner side 

 with a stout spine. Pronotum rugose with a scattering of little- 

 elevated rounded tubercles, the disk rounded into the lateral 

 lobes without lateral carinas except dull ones on the posterior 

 three- fourths of the metazona ; the pronotal disk is subtruncate 

 posteriorly, the disk there flattened and with a short slight 

 median carina, and very broadly and roundly angulate anteri- 

 orly and usually with a slight mesial swelling on the front 

 margin ; transverse sulci well developed, the posterior one very 

 distinct ; lateral lobes shallow, about twice as long as high and 

 without humeral sinus, the lower margin thickened and straight, 

 gently slanting upward from in front backward ; prosternum 

 with a pair of moderately long spines ; meso- and metasternal 

 lobes acutangulate, the latter more rounded ; metasternal pits 

 merged to form a single rounded opening. Organs of flight 

 strongly abbreviated, the elytra scarcely twice as long as the 

 pronotum and the wings scarcely longer. Legs long and slen- 

 der, the anterior femora nearly twice as long as the pronotum ; 

 anterior tibiae flat and unarmed above, beneath armed on both 

 sides with several spines ; foramina conchate, little expanded ; 

 middle tibiae unarmed above on the cephalic margin, the op- 

 posite margin armed with from one to three short spines and 

 armed beneath on both sides with several spines ; posterior 

 tibiae armed above and below on both margins for most the 

 length, an apical spine above on both sides ; all femora unarmed 

 above but with all the geniculations spined ; anterior and inter- 

 mediate femora unarmed beneath on the caudal margin, the 

 opposite side with one or two spines ; posterior femora armed 

 beneath on the outer, or cephalic, margin only with six to eight 

 spines in the apical two-thirds. Abdomen stout, subcom- 

 pressed ; subgenital plate of the male apically narrowed, deeply 

 cleft, the side pieces cylindrical, about twice as long as broad 

 and terminated by a pair of cylindrical blunt styles about four 

 times as long as broad, of the female apically narrowed and 

 with a V-shaped notch ; supraanal plate of both sexes about as 

 long as broad, apically broadly rounded, more so in the male, 



