AXTHOCOPA. 291 



shortj geniculated, theflaffellum subclavate seen in front, 

 but seen from above, owing to the compression of the 

 terminal joint, subfusiform, the first joint of the flagel- 

 lum globose, rather robust, the second short, subclavate 

 and subequal with the rest, which increase gradually in 

 length and substance to the terminal one, which is the 

 longest, and laterally compressed ; face flattish ; clypeus 

 subquadrate, very convex and very pubescent ; " labrum 

 oblong, quadrate ; mandibles strong, tridentate ; labium 

 (tongue) long, filiform; labial palpi having the third joint 

 articulated externally on the outer side of the second ; 

 maxillary palpi four-jointed." Thorax globose ; scu- 

 tellum lunate; post-scutellum transverse, linear; meta- 

 thorax rounded ; wings with two submarginal cells and 

 the commencement of a third just indicated, the second 

 very slightly larger than the first, and receiving both the 

 recurrent nervures, the first just beyond its commence- 

 ment and the second close to its termination ; legs short, 

 rather robust, subsetose; the posterior tibicB e^XetxizSi'j 

 convex and the posterior plantce with a dense, short 

 brush beneath; the claws simple. Abdomen cylin- 

 drical, retuse at the base, convex above, declining from 

 the base of the fourth segment to the extremity, the 

 first and second segments very slightly constricted, 

 the margin of the posterior one, at the apex, slightly 

 crenulated, the ventral segments plane and from the 

 second covered with a dense brush of parallel hair, ex- 

 cepting the sixth, which is reflected laterally and longi- 

 tudinally, convex down the centre. 



The MALE differs in having " the sixth segment of the 

 abdom,en emarginate, and with a strong tooth on each 

 side; the terminal segment emarginate, thus producing 

 two strong, lateral, obtu§e teeth, the ventral plates of 



u 2 



