330 BRUES. 



vated medially where it bears two convergent carina? in addition to a 

 lateral carina on each side, the surface between the carina? finely rugu- 

 lose; second segment smooth, twice as long as the first; third to 

 seventh subequal, each half as long as the second. Ovipositor curving 

 downward, as long as the abdomen. Propleura? triangular, finely 

 reticulate in a vertical band across the middle; mesopleura? twice as 

 high as broad, smooth and polished, with a crenulate line along the 

 posterior margin. Legs slender, tibial spurs short. Wings with ovate 

 stigma, the ladius originating just beyond its middle, the latter 

 strongly curved basally and straight apically, ending near the tip of 

 the wing. First discoidal cell sessile; basal vein nearly straight; sub- 

 median cell slightly longer than the median; second discoidal cell 

 closed, the discoidal vein broken near its posterior tip; first recurrent 

 nervure received well before the transverse cubitus with which it is 

 parallel. Anal cell with a slight stump of a vein above near the base. 



On specimen XXB2159. 



This is a very small, but typical representative of the genus. It 

 was no doubt parasitic upon beetles occurring in or about the succin- 

 iferous trees. 



Blacus multiarticulatus sp. now 



9 . Length 3 mm. Ovipositor as long as the body. Head 

 broadly transverse, much narrowed behind the eyes, the ocelli large 

 and placed in a small triangle, the lateral ones being twice as far from 

 the eye margin as from the median ocellus. Eyes oval, but not much 

 longer than broad. Surface of head shining and smooth, except for a 

 slight shagreened sculpture on the face. Antenna? about 27-jointed, 

 inserted close together midway between the mouth and the vertex; 

 face strongly convex in the median plane. Clypeus separated by a 

 deep crenate suture; mandibles small, acute, their bases well removed 

 from the eyes. Head completely margined behind. Scape short, 

 oval, thick; first joint of flagellum elongate, four times as long as thick 

 and nearly as long as the width of the eye; second joint nearly one- 

 third shorter; following decreasing in length until those near the apex 

 become quadrate. Occiput medially with a short impressed line 

 which extends forward from the occipital margin toward the ocelli. 

 Mesonotum scarcely two-thirds as wide as the head, much narrowed 

 anteriorly; median lobe narrowed behind, the furrows meeting far 

 before the base of the scutellum ; tip of mesonotum before the scutel- 

 lum with a deep depression that is longitudinally wrinkled and reaches 



