. 187 



of the post-sciitellum ami on the center of the metanotuni. Female- 

 Length 7 mm. Acapnlco, Mexico (Baker.) 



Clypeus. if anything, more strongly, but not so closeiy punetureil 

 as the thorax, slightly longer than wide, its apex projecting, trans- 

 verse, depressed in the middle. Temples wide, rounded, but not na- 

 rrowed, the occiput transverse. Thorax longer than wide, transverse 

 at the base, the apex broadly rounded, depressed in tlie middle. 

 Pronotum, niesonotum, and scutellum excepting the middle at the apex, 

 strongly closely punctured. Post-scutellum raised into a distiiu-t ridge, 

 rugose at the base, almost margined on the top, the apical slope 

 obliqaiely rounded, smooth, almost transveise below. Apex of nieta- 

 notum broadly depressed,, bearing small scattered punctures, the 

 broadly rounded sides closely and distinctly ' but not coarsely punc- 

 tured and are covered with silvery pubescence. The basal abdominal 

 segment has a distinct neck, from whioh it becomes gradually widened 

 to the apex which is transversely depressed above, the second distinc- 

 tly longer than wide, slightly roundly narrowed at the base; all the 

 segments except the last, are closely punctured, the puncturation be- 

 coiming weaker towards the aipex. 



5207 Ancistrocerus pulchricornis sp. nov. 



Black; the underside of antcnnal scape, clypeus, a line about three 

 times longer than wide, round.?d above and of almost equal width above 

 the antennae, a broad line on the lower part of the eye incision, the 

 base of the pronotum narrowly, a more distinct line along its sides, an 

 irregular spot below the tegnlae, a small spot outside the scutellar 

 transverse furrow, postscutellum, a broad line on the apices of the 

 basal two abdominal segments, and the four anterior coxae femora 

 and tibiae below, pale yellow. 



Wings hyaline, smoky violaceous on the apical half, the stigma 

 and nervures black. Flagelluin except the apical joint, pale orange 

 yellow; the hook black, stout, as long as the joint. Male. Length 

 8 mm. Belize (J. D. Johnson.) 



Head strongly but not closely punctured, the clypeus more sparsely 

 punctured, clearly longer than wide, its apex roundly incised- Pro-and 

 mesothorax closely strongly punctured, the base transverse, not pro- 

 jecting laterally. Postcutellum smooth at the base, the rest strongly but 

 not olosely punctured, the apex narrowed gradually but not sharply. 

 Mletanotum above strongly deeply punctured, more or less reticulated, 

 the rest of the metanotuni less strongly obliquely punctured, and less 

 strongly in the middle than on the sides. Pro-and mesopleurae 

 strongly closely punctured; the metapleurae strongly sparsely punctu. 

 red above, more weakly below, where it is densely covered with 

 silvery pubescence and projects into a stout white tooth. Basal sloipe 



