232 PROCEEDINGS OF THE ACADEMY OF [May-Oct., 



Size medium, form moderately slender. Head with the greatest 

 width across eyes twice that across the expansion of the pronotum, 

 when seen from the cephalic aspect the form of the head is depressed 

 trigonal, the greatest depth contained one and five-eighths times in 

 the greatest width across the eyes; occipital line subtruncate, round- 

 ing to the eyes laterad; region of the frons distinctly declivent, 

 slightly concave; juxta-ocular sulci and the median pair of sulci well 

 impressed on the frons; ocelli distinct, small, well separated, placed 

 in a strongly curved line; facial shield transverse, its greatest depth 

 contained one and two-thirds times in the greatest width, the dorsal 

 outline of the plate transverse truncate mesad, obliquely truncate 

 laterad, lateral margins vertical, ventral margin weakly arcuate- 

 emarginate, surface of the plate with a few depressions laterad but 

 no elevations excepting the dorsal and lateral margins, which are 

 cingulate; clypeus and labrum transverse, eyes strongly produced 

 laterad, when seen from the dorsum or from the cephalic aspect 

 the production of the eyes is rectangulate, the apex submammilate, 

 the cephalic surface of the eyes with a distinct convexity: antennae 

 simple, setaceous, relatively short. 



Pronotum elongate, the greatest width across the inflation con- 

 tained slightly more than five times in the greatest length of the 

 same, inflation little pronounced, the collar regularly narrowing 

 from this to the rather narrowly rounded cephalic extremity, the 

 shaft with the margins faintly concave, the least width of the shaft 

 being at the median third, where the margins are briefly subparallel; 

 lateral margins of the shaft distinctly dentate, the teeth sparser 

 caudad, the margins of the collar closely denticulate, on the ex- 

 pansion proper the denticulations are few and weak; in section 

 the shaft is strongly trigonal, median carina of the shaft fairly 

 decided and continuous, collar with a medio-longitudinal impression, 

 which is stronger caudad and there accompanied by a median carinu- 

 lation, transverse impression well indicated. 



Tegmina about one and one-fourth times as long as the prono- 

 tum, in form quite elongate elliptico-ovoid, the greatest width 

 contained about three times in the greatest length; costal margin 

 strongly arcuate proximad and distad but straight for the greater 

 portion of its length mesad, apex subrectangulate with the immediate 

 apex very narrowly rounded, sutural margin with the proximal 

 third faintly arcuate, the distal fourth obliquely rounding to the 

 apex: marginal field occupying aboat two-fifths of the width of the 

 tegmen, gently broadening to the distal fourth, thence narrowing 



