180 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii4 



apex; subgenital plate with triangle closed a little above middle, a 

 sharp ridge from there to apex. 



Length head and thorax 4.0 mm., abdomen 4.6 mm., forewing 7.3 

 mm., rear wing 4.6 mm.; length genitalia 0.80 mm., width 0.53 mm., 

 subgenital plate length 0.8 mm., width 0.40 mm. 



Holotype male: Rfo Blanco, Vera Cruz, Mexico, Nov. 13, 1957, 

 E. and K. Dreisbach (USNM). 



45. Auplopus amoenus, new species 

 Figures 38, 39 



Holotype male. Cl3T)eus and face black except for a white streak 

 on outer edges, continuing on inner orbits to above antennae; head 

 greenish with black reflection, dorsum of thorax a brighter greenish, 

 the sides of thorax more black with only green color in grooves on side 

 of thorax; abdomen black, except third tergite is reddish and apical 

 tergite has a white spot in center; all femora and tibiae rufous, except 

 last pair of femora is black at base; basitarsi of forelegs rufous, rest of 

 joints and all joints of last two pairs of tarsi are black; antennae wholly 

 black, except fu-st joint is whitish beneath; clypeus slightly concave 

 across apex, with the sides thin almost transparent and projecting 

 forward slightly at apex, a slight convexity on middle of clypeus in 

 center; clypeus extends under eyes shghtly; clypeus 2.0 as broad as 

 long; head 1.25 as broad as long; ratio of third and fourth antennal 

 joints is 11:11; upper interocular distance (15) equal to the lower; 

 wings hyaline, slightly dark, apex darker, veins and stigma black; 

 basal veins in forewing disjointed not qute 0.5 the length of transverse; 

 the cubital and subdiscoidal in rear wings interstitial; parameres of 

 genitalia rather slender, short hairs on inner edge and surface, rather 

 acute; volsellae with the apical outer flange raised above side pieces. 



Length head and thorax 4.3 mm., abdomen 4.3 mm., forewing 7.3 

 mm., rear wing 6.6 mm.; length genitalia 0.93 mm., width 0.46 mm., 

 length subgenital plate 0.93 mm., width 0.46 mm. 



Holotype male: Xilitla, Mexico, July 21, 1954, R. R. Dreisbach 

 (USNM). 



46. Auplopus vulcanensis, new species 



Figures 28, 29 



Holotype male. Clypeus black, face and head black with a faint 

 trace of greenish; dorsum of thorax green, the color becoming stronger 

 from pronotum to propodeum, the apical third of propodeum with 

 strong purple reflection; the sides of thorax about same color as pro- 

 podeum but slightly more bluish green, except the furrows are black; 

 abdomen black with slight bluish reflection, the basal tergite slightly 

 rufous on sides and apical edge of tergites semitransparent and slightly 



