170 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lu 



covered all over with fine silvery pubescence which only shows up in 

 reflected hght; coxae blue, trochanters dark, all femora and foretibiae 

 reddish; the midtibiae reddish beneath, dark dorsally, rest of legs 

 dark; the posterior tibiae with violaceous reflection on dorsal surface; 

 ratio of lengths of third and fourth antennal joints is 13:10; the upper 

 interocular distance (16) is equal to the lower; clypeus not quite 

 twice as broad as long; head just slightly broader than long (16:15); 

 lateral ocelli as far from eyes as from each other. 



Length 8.6 mm. 



Holotype female: Cano Saddle, Gatun Lake, Panama, May 3, 

 1923, R. C. Shannon (USNM). 



30. Auplopus busckif new species 



Holotype female. The sides of clypeus and rest of head, and thorax 

 bright blue green; abdomen with more bluish reflection, black in 

 certain light; clypeus face and inner orbits to antennae strongly 

 silvery sericeous, thorax covered with pubescence which is not as 

 strongly silvery; abdomen pruinose; coxae blue green, trochanters 

 black, yellowish beneath; all femora yellowish as well as first pair of 

 tibiae ; the femora with middle and posterior pair dark at base and the 

 posterior pah* dark on base and laiees; posterior tibiae and aU tarsi 

 dark; antennae reddish beneath, black above; clypeus, on middle of 

 apex, apex of mandibles and mouth parts, dull yellowish; clypeus 

 with a polished rim, widest in middle, 2.0 as broad as long; ratio of 

 lengths of tliird and fourth antennal joints is 16:13; upper interocular 

 distance (16) equal to the lower; head 1.2 as broad as long; lateral 

 ocelli a little more than 1.5 as far from eyes as from each other; wings 

 hyaline, veins and stigma blackish. 



Length 6.6 mm. 



Holotype female: Trinidad, B.W.I., Aug. 1, 1921, August Busck 

 (USNM). 



31. Auplopus medius, new species 



Holotype female. Clypeus black, rest of head and thorax green; 

 abdomen, antennae, and legs black; except abdomen in certain hght is 

 slightly bluish and femora, coxae, and trochanters are strongly bluish 

 in reflected light; clypeus 2.0 as broad as long; ratio of lengths 

 of third and fourth antennal joints is 11:10; upper interocular dis- 

 tance (18) equals the lower; head 1.2 as broad as long; lateral almost 

 2.0 as far from eyes as each other; head and mesonotum finely, closely 

 punctured; wings defimitely brownish, clypeus and face strongly 

 silvery sericeous; thorax with considerable long light-colored hair 

 especially on propodeum. 



Length 8.8 mm. 



Holotype female: Zacapa, Guatemala, Bequaert (MCZ). 



