_^ 155 



tured, the punctures not deep, clearly separated; the ocelli do not form 

 quite an equilateral triangle^ the hinder being separated from each 

 other by a slightly greater distance than they are from the anterior. 

 Temples rounded, as long as the eyes above. Occiput bordered by a 

 furrow behind. Eyes pilose. Malar space small. Scutallum large, 

 projecting distinctly over the median segment, its apex slightly roundly 

 incised in the middle, the sidee broady rounded. Postscutellum and 

 median segment with an almost vertical slope,, the former with a curved 

 pale yellow line round the top; tbe sides of the metanotum roundly 

 broadly projecting above. Clypeus clearly wider than long, almost 

 impunctate, the apex bluntly rounded in the middle. Third abscissa 

 of radius about four times the length of the second. 



Agrees best with the group of atcr Ducke. The projecting scutellum 

 separatee it readily from C. mexicanvs described above. The form of 

 coloration of that species (including tbe dense silky pubescence) is a 

 common one with neotropical solitary wasps, e. g. O. nasidens. The 

 third joint of antennae is three times longer than the second and 

 nearly as long as the following two united. From Mexico. 



3952 Chartergus tuberculatus gp. nov. 



Black, densely covered with a silky pile; the underside of the anten- 

 nal scape, a broad line on the lower side of the eyes incision, the lower 

 haJf of the outer eye orbits, the clypeus except for a semicircular mark 

 on the top, a line on the apex of the pronotum, postscutellum, the 

 apices of the basal six abdominal segment and an obscure mark in the 

 center of the seventh, paJe yellow. Legs black; all the coxae below, 

 the fore femora below entirely, and the four posterior broadly at the 

 apex, pale yellow; wings clear hyaline, the nervures black. Male. 

 Length 8 mm. Eio Braneo, Obidos, Brazal (From collection of C. 

 F. Baker). 



Eyes large, bare, converging below; the malar space almost obsolete. 

 Ocelli in a triangle, the hinder separated from each other by about the 

 same distance as they, aire from the eyes. Temples roundly obliquely 

 narrowed. Clypeus a little longer than its width at the lower edge 

 of the eyes, the apex bluntly rounded in the middle. Apex, of prono- 

 tum roundly convex. Postscutellum broadly roundly tuberculate in the 

 middle. Median segment very short; it has an almost vertical slope 

 and is densely covered with silvery pubescence; the upper, outerside 

 forms a distinct oblique angle, which does not reach the middle, the 

 rest of tlie eides broadly rounded. There is a distinct longitudinal 

 furrow in the center of the upper third of the metanotum. First 

 abdominal segment large, cupuliforn, with a distint petiole at the base, 

 twice longer than wide; there is a brownish mark on either side of 

 the second abdominaJ segment. 



The front is sparsely but distinctly punctured in the middle; there 

 is a short furrow below the oceEi. Pro and mesothorax closely, dist- 



