268 PROCEEDINGS OF THE NATIONAL MUSEUM vol.88 



few scattered ones and with a few indistinct oblique carinae ventrad 

 of antennal bases; frontal tentorial pits located at margins of com- 

 pound eyes, slightly dorsad of level of antennal bases ; width of malar 

 space slightly less than one-third height of compound eye; fronto- 

 genal suture extending transversely from compound eye to dorsal 

 articulation of mandible ; combined widths of compound eyes greater 

 by one-third than width of interocular space at level of antennal 

 bases; diameter of posterior ocellus one-half width of interocellar 

 space. 



Dorsum of thorax coarsely pitted, uniformly covered by long 

 yellowish setae ; anterolateral angles of pronotum strongly produced ; 

 anterior dorsal carina interrupted on mesal one-third; parapsidal 

 furrows partly obliterated; prepectus usually completely hidden by 

 anterior projection of lateral margin of mesoscutum; apex of 

 mesoscutellum strongly bidentate, the projections slightly upturned 

 and a small dorsal carina present on each; metepisternum covered 

 by large, shallow punctures, areas between punctures minutely 

 reticulated; metacoxae glabrous, covered, except on outer dorsal 

 side, by long, fine setae; metafemora (fig. 12, a) narrow, glabrous, 

 scatteringly covered by setae of various lengths, outer ventral basal 

 tooth nearly as long as following ones, a minute tooth often present 

 between basal and second tooth ; second and third teeth long, narrow, 

 acute, apical tooth large, blunt; inner tooth wanting; metatibia with 

 apical spine long, acutely pointed. 



Propodeum with only a few long, lateral setae, and a patch of 

 short setae on each side near base; carinae few, often partly or 

 completely obliterated near base and on disk; one strong roundly 

 blunted lateral tooth present on either side of point of insertion of 

 petiole, spiracular opening slanted obliquely laterad; petiole glab- 

 rous, basal lamina present only on ventral and lateral sides, lateral 

 carinae wanting, a few lateral setae present near apex ; gaster usually 

 slightly shorter than metafemur; abdominal tergites 3 to 7 with a 

 few scattered lateral setae ; eighth tergite faintly reticulated, sparsely 

 covered by long setae; spiracular openings round; cercus obovate, 

 located midway between anterior and posterior margins of epipy- 

 gium; apex of ovipositor sheath provided with long ventral setae. 



Male: 6 mm. Antennal scape (fig. 8, h) uniformly broad from 

 base to apex; combined widths of compound eyes equal to inter- 

 ocular space at level of antennal bases; inner tooth of metafemur 

 wanting; gaster usually slightly larger than metafemur. 



Type locality. — Mexico. 



Types. — Holotype, male, 1817.1; allotype, female, 1817.2; para- 

 types, 1817.3, 1817.4, 2 males: Academy of Natural Sciences of 

 Philadelphia. 



