MEXICAN HYMENOPTERA. 23 



basal middle, elevated lines subobsolete, spines pi'ominent and subacute ; 

 areolet 5-angular; abdomen flattened, oblong-ovate, petiole flat and 

 slender, the first segment angular near apex in profile, bituberculate 

 above ; basal fovea of second segment transversely linear and very 

 deep. Length 6 lines. 



One $ specimen. The metathorax is marked much like that of 

 miuiifus, with the band and stripes much broader. 



6. Hoplismenus dissoaus, u. sp. 



9. — Black, subopaque ; head white, posterior margin of occiput, 

 a spot on vertex covering ocelli, extending nearly to base of antennae 

 and confluent with a transverse line behind ocelli, black ; broad annu- 

 lus on antennae and scape beneath, white ; upper and lower margins 

 of prothorax, the former interrupted before and the latter dilated la- 

 terally, two short lines on mesothorax, a spot on each side before scu- 

 tellum, the latter except base, postscutellum, broad inner margin of teg- 

 ulge, and a line beneath, white ; metathorax white, with three longitu- 

 dinal black stripes, the median one broad and entire^ the lateral ones 

 dilated anteriorly, not reaching the base, and connected to the median 

 stripe by a slender line, basal incisure black; pleura white, the incis- 

 ure black; wings hyaline, nervures black or brown, stigma reddish; 

 legs luteous, coxae much paler, spot on posterior pair behind, all the 

 femora behind, stain on four anterior tibise behind, and tips of tarsi, 

 black ; abdomen yellow, tinged with luteous, tip of first segment above 

 except two apical spots, basal two-thirds of second segment except a 

 transverse line on basal foveae, and lateral margin, basal half of third 

 segment, base of following segments more or less, a narrow apical band 

 on fourth segment, abbreviated laterally, black. Head shining; trans- 

 versely subcompressed, face broad, cheeks subcouvex, occiput flat; an- 

 tennae long, rather slender, third and fourth joints subequal ; thorax 

 closely punctured; scutellum flat; metathorax with well-defined ele- 

 vated lines, spines short and acute ; areolet triangular ; abdomen sub- 

 depressed, oblong-ovate, second and third segments very closely and 

 finely punctured ; basal foveas of second segment transversely linear 

 and deep. Length 5 lines. 



One 9 specimen. 



7. Hoplismenus minax, n. sp. 



% . — Black, opaque, with a very short, subsericeous pubescence ; 

 face, clypeus, mouth, orbits, broad on the cheeks, annulus on antennae, 

 scape beneath, collar beneath, line above, upper margins of prothorax 

 interrupted above, spot over tegulae, scutellum, postscutellum, and 



