324 PROCEEDIITGS OF THE NATIONAL MUSEUM vol.88 



This species is most easily recognized by its compact body, with 

 the antennal scape short and flagellum stout, the head, from the dorsal 

 aspect, one-half as long as wide, the metafemora semiglobose and 

 with 18 or more minute ventral teeth, the basal one rounded, not acute 

 (fig. 12, ^), and the abdomen strongly compressed. 



Description. — Black with yellow markings; anterior and mesolegs, 

 frons, all dorsal area of pronotum except narrow mesal spot, broad, 

 wedge-shaped lateral spots of mesopraescutum, tegulae, lobes of 

 mesoscutum except variable longitudinal mesal mark, usually small 

 ventral spot at apex of metacoxa, basal and variable dorsal and apical 

 spots of metaf emur, yellow ; abdomen varying from black to rufous. 



Female: 4-4.5 mm. Apex of antennal scape not quite reaching 

 level of ventral margin of anterior ocellus, pedicel slightly longer 

 than segment 4, ring segment one-half length of pedicel, segments 

 4 to 11 equal in length, 12 and 13 slightly shorter ; scrobe cavity deep, 

 edge indistinctly carinate at dorsal and ventral margins, several in- 

 distinct transverse carinae usually present in scrobe cavity just ven- 

 trad of anterior ocellus ; interantennal projection with a minute dorsal 

 carina; deep, closely set punctures on frons lateral to scrobe cavity, 

 punctures scattered ventrad of antennal bases, tending to coalesce to 

 form irregular transverse carinae; frontal tentorial pits located just 

 laterad of scrobe cavity, at level of ventral margin; width of malar 

 space one-third height of compound eye ; f rontogenal suture for one- 

 half its length extending directly ventrad from compound eye, then 

 abruptly curved toward mandible; area of gena posterior to f ronto- 

 genal suture usually with three oblique rows of large punctures; com- 

 bined widths of compound eyes slightly more than one-half inter- 

 ocular width at level of antennal bases ; left mandible with two acute 

 teeth, the ventral one larger, right mandible with three teeth, the 

 middle one smallest and most blunt; diameter of posterior ocellus 

 slightly less than one-half interocellar width. 



Dorsum of thorax densely and coarsely pitted, areas between 

 punctures minutely reticulated ; pubescence short except at posterior 

 dorsal margin of pronotum and on mesoscutellum ; anterolateral 

 angles of pronotum weakly carinate, dorsal anterior margin acarinate ; 

 parapsidal furrows obscure ; prepectus narrow, tongue-shaped, slightly 

 overlapping anterior apex of tegula ; apex of mesoscutellum provided 

 with a narrow, mesally depressed lamina ; metepisternum deeply and 

 closely punctured; metacoxae minutely shagreened on outer dorsal 

 surface, strongly punctured and setose elsewhere; metafemora 

 globose, outer surface minutely reticulated, ventral margin with 18 to 

 26 small, closely set teeth, basal one rounded, not acute (fig. 12, k) ; 

 inner tooth large, usually acute ; metatibia with apex acute or blunt. 



