NEW SPIDER WASPS — DREISBACH 179 



(12); clypeus and face strongly silvery pubescent, thorax not so 

 strongly so, the latter rather rough-looking from the straggly upright 

 hair; wings hyaline; parameres rather broad; volsellae with faMy long 

 hairs on inner edge; aedeagus emarginately notched at apex; subgenital 

 plate with basal triangle closed about middle of plate, the apical half 

 with a very thin sharp ridge to apex. 



Length head and thorax 4.0 mm., abdomen 3.3 mm., forewing 6.3 

 mm., rear wing 4.6 mm.; length genitaha 1.00 mm., width 0.53 mm., 

 length subgenital plate 0.66 mm. (without stem), width 0.26 mm. 



Holotype male : From Mexico at light in hold, W. J. Ehringer, Aug. 

 10, 1934, Philadelphia 24134 (USNM). 



Paratypes: Mexico, banana debris, Oct. 29, 1936, lot no. 36-34294 

 (USNM); 3, Costa Rica, banana debris. May 11, 1936, New York 

 59336 (USNM) (RRD); 1, Mexico, banana debris. May 11, 1936, 

 New York, lot no. 59338 (USNM); 1, Mexico, banana debris inter- 

 cepted at Mobile, Sept. 4, 1932, Mobile 846 (USNM); 1, banana trash 

 Dec. 19, 1935, New Orleans, 14936 (USNM). 



44. Auplopus atratus, new species 



Figures 40, 41, 76 



Holotype male: Edges of clypeus and face white for more than 0.67 

 of their width, brown in middle 0.33; inner orbits broadly white on 

 face and narrowing to a point on front just above antennae; front 

 vertex, thorax and abdomen black, except apical tergite is white on 

 about middle; a narrow white stripe across base of third tergite; black 

 on head and thorax opaque, abdomen shining; forecoxae yellowish 

 beneath, on dorsal surface and sides with a black stripe in middle of 

 latter; last two pau's coxae shining black; foretrochanters yellow, 

 middle pair yellow suffused with black, last pair black with some 

 yellow beneath; all femora and tibiae reddish, the posterior femora 

 black at base; basal tarsal joint all yellowish (foretarsi) or yellowish 

 beneath and dark above (last two pairs), rest of tarsi dark; mandibles 

 with apical half yellowish, mouth parts brown; thorax with upright 

 hair all over thin, neither head nor thorax with much silvery pubes- 

 cence; wings hyaline, sHghtly dark, darker at apex; clypeus in a smooth 

 curve across apex, concave in middle with a medium transparent rim, 

 narrowest in middle; clypeus 2.3 as broad as long; basal antenna! joint 

 white beneath, rest of antennae only slightly yellowish beneath and 

 black above; ratio of lengths of third and fourth antennal joints is 9:9; 

 upper interocular distance (14) equal to the lower; head 1.3 as broad 

 as long, parameres rather long and more slender than usual, a few long 

 hairs on apical half, about twice as long as volsellae; volsellae broad 

 with more hairs than usual; parapenial lobes slender, of about equal 

 width over whole length; aedeagus rounded at apex; subgenital at 



