RUTELIN/E 63 



2 Form short, oblong, rather flattened above, deep black through every 

 part of the body and legs, the elytra opaculate; under surface and 

 legs shining; head less than half as wide as the prothorax, finely, 

 densely punctato-rugulose and slightly shining, the clypeus slightly 

 less than twice as wide as long, the parallel sides strongly rounded, 

 the contour thence unbrokenly but more broadly rounded across 

 the apex, the base notably constricted; its surface is deeply concave, 

 with very broadly and strongly reflexed edges in about apical half, 

 the suture very fine; eyes small, not prominent; antennal club short, 

 oval, not as long as the five preceding joints; ligula large, excavated 

 medially toward apex; prothorax large, barely a third wider than 

 long, inflated at the middle, the sides thence feebly converging and 

 straight to the base and strongly converging and subsinuate to the 

 extremely acute and prominent apical angles, the basal slightly 

 more than right but not rounded, only slightly blunt at their apices; 

 basal lobe very broad and indefinite, the bead fine and entire; surface 

 very evenly convex, without impressions or modified median line, 

 extremely densely and finely punctulato-rugulose throughout and 

 clothed rather conspicuously with erect whitish pubescence; scutel- 

 lum scabrous, with polished edges; elytra quadrate, a fifth or sixth 

 wider than the prothorax, parallel, scarcely visibly longer than wide, 

 very broadly and obtusely rounded at apex, the sides broadly arcuate; 

 surface with a sutural and two discal convex costules, the broad space 

 between the sutural and first discal flat, closely, strongly and con- 

 fusedly punctate broadly, that between the two discal, elevated me- 

 dially, the ridge bearing a single series of very coarse and close-set 

 punctures ; humeral interval also bearing a regular series of punctures, 

 which become broadly diffused over the humeral callus; submarginal 

 interval strongly elevated; sulci all distinctly punctate; pygidium 

 convex, extremely densely, finely punctulato-rugulose; hind tibiae 

 rather thick, not surate; external tooth of the anterior acute and 

 distinct; middle coxae very approximate, the intervening surface 

 not at all prominent. Male with the larger anterior claw stout, 

 gradually arcuately aciculate, the upper ramus very short and 

 slender. Length (c?) 8.7 mm.; width 5.0 mm. Costa Rica (Chiri- 

 qui) . *quadripennis n. sp. 



Form more elongate and convex, subpyriform; under surface black, with 

 shining greenish lustre, the abdomen rufescent; legs blackish to 

 piceo-flavate; head black, small, two-fifths as wide as the prothorax, 

 rather coarsely and moderately densely punctato-rugose; clypeus 

 flat, gradually and very feebly reflexed peripherally, broadly arcuate 

 at apex, with rounded angles, the sides parallel, broadly arcuate to 

 straight, the fine suture evident; antennae rather small; eyes not at all 

 prominent; prothorax large, two-fifths wider than long, the sides 

 broadly rounded medially, thence straight and parallel basally and 

 converging and straight to the very acute prominent apical angles, 

 the basal slightly more than right, not rounded; basal lobe feeble, 

 the bead fine, entire, the surface rising convexly from it to the general 

 level; surface evenly and strongly convex, not at all impressed, 

 without modified median line and extremely densely and finely 



