NEW SPIDER WASPS — DREISBACH 157 



blacldsh above; trochanters and all rest of legs dark yellowish, except 

 apical tarsal joint blacldsh. 



Length head and thorax 4.6 mm., abdomen 4.6 mm., forewings 

 9.9 mm., rear wings 7.3 mm. 



Holotype female: San Jose, Costa Rica, M. Valerio, no. 85 (USNM). 



6. Auplopus nebulosiis, new species 



Holotype female. Head opaque black, thorax dull greenish with 

 purple reflection, abdomen black with slight bluish reflection; a 

 little upright hair on clypeus, front, vertex and pronotum, much more 

 and longer on propodeum; considerable appressed, somewhat silvery, 

 inconspicuous pubescence on head and thorax; antennae black; apex 

 of clypeus, apex of mandibles and mouth parts, brown; coxae dark, 

 with bluish reflection; trochanters, femora, tibiae, and basal tarsal 

 joints, light reddish; last four tarsal joints dark; clypeus as usual, 

 twice as wide as long; head and thorax not punctured; upper inter- 

 ocular distance (18) 0.9 as long as lower; head 0.9 as long as broad; 

 ratio of length of antennal joints is 15:12; foreoceUus the largest, 

 laterals 1.5 as far from eyes as each other; posterior orbits evident, 

 temples evanescent; wings hyaline, contrasting with black veins and 

 stigma; basal veins displaced about twice thickness of vein, in rear 

 wings subdiscoidal and cubitus displaced about three times thickness 

 of vein; legs not smooth but with pubescence. 



Length head and thorax 5.3 mm., abdomen 5.0 mm., forewing 

 8.8 mm., rear wing 6.6 mm. 



Holotype female: San Jose, Costa Rica, May 1940, Sternitzky 

 (USNM). 



7. Auplopus opaciis, new species 



Holotype female. Head and thorax green with some bluish and 

 purplish reflection, abdomen reflecting blue and purple, clypeus and 

 face densely white pubescent (completely hiding integument), the 

 front, vertex, and thorax not so densely pubescent, except outer 

 posterior corners of propodeum; fairly well-haired with upright hair 

 as well; abdomen densely, finely pubescent all over except pj^gidium; 

 the colors shining through in reflected light; basal joint and next two 

 or three joints yellowish underneath, the rest darker, black dorsally; 

 coxae black; trochanters, femora and tibiae reddish yeUow; basal 

 two tarsal joints of foretibiae yellowish, rest of tibiae much darker 

 (last two pairs tibiae darker on knees); mentum, mouth parts, and 

 apex of mandibles bright yellow, apex of normal clypeus slightly 

 reddish; clypeus 2.0 as wide as long; upper interocular distance 

 (16) only about 0.85 that of lower; head 1.2 as broad as long; ratio 



