50 PKOCEEDINGS OF THE NATIONAL MUSEUM vol.78 



mandible, constricted, mouth narrower than narrowest width of face, 

 temples in dorsal view faintly convex. Humeral margins of 

 pronotum roundly prominent anteriorly; prepectal furrow foveo- 

 late; subalar tubercle low, noncarinate; lower division of meta- 

 pleurum coarsely, densely rugose punctate, upper division nearly 

 smooth; propodeum polished before apical carina, arcuately ru- 

 gose behind, basal carina slightly bowed medially, apical carina 

 not quite closed medially but extending forward from each side 

 to basal carina and setting off a constricted median area; areolet, 

 small, rather short and broad with recurrent not far from middle. 

 Second tergite hardly three times as long as broad at base; sheath 

 barely longer than hind tibia. 



Head black and white, face, clypeus, mouth parts, broad complete 

 orbital ring, apex of horn, and annulus on flagellar joints 5-10 white; 

 thorax tricolored; propleura black; pronotum black with broad an- 

 terior lateral and humeral margins white; mesoscutum black with 

 only the tubercles above the tegulae white ; scutellum and carina and 

 postscutellum white, lateral areas black; mesopleurum and sternum 

 and metapleurum pale ferruginous or testaceous; prepectus, area 

 around subalar tubercle, and upper part of j^osterior margin of 

 mesopleurum black, the tubercle white, upper portion of red color 

 of mesopleurum and upper division of metapleurum more yellowish ; 

 propodeum testaceous with basal suture and a median longitudinal 

 stripe black, the latter broader basad of basal carina and spreading 

 out narrowly along carina ; legs and abdomen testaceous, front coxae 

 whitish ; wings hyaline, veins brown, stigma pale. 



Male. — Essentially like female ; sculpture of metapleurum and pro- 

 podeum much weaker and sparser, apical carina not reaching basal 

 carina but fading out about half way; annulus on flagellar joints 

 S-15. 



51. POLYCYRTUS (POLYCYRTUS) PAULULUS Cresson 



MesosteMUs (Polycyrtus) paululus Cresson, Proc. Acad. Nat. Sci. Phila., 

 1873, p. 145, female. 



A cotype from Mexico in the United States National Museum with 

 the abdomen partly eaten is the basis of the following description. 



Female. — Differs structurally from the foregoing description of 

 licarinatus as follows: Frons with scrobes hardly defined, pits and 

 tubercle at base of horn also obsolete; eyes nearly parallel and com- 

 prising much less than two-thirds of total width of head; face pol- 

 ished; clypeus in profile very prominent; malar space as long as 

 basal width of mandible; occipital carina less prominent below, the 

 groove separating it from hj'-postomal carina shallow; temples in 

 dorsal view flat, nearly half as long as short diameter of eye. Pro- 



