NEW SPIDER WASPS — DREISBACH 175 



apex slightly yellowish; all femora and first two pairs tibiae yeUow, 

 as well as most of foretarsi; two posterior tibiae and last two pairs 

 tarsi dark; mouth parts, middle half of mandibles, clypeus, face and 

 broad inner orbits half way from antennae to foreocellus, white; 

 apex of mandibles reddish, base black; clypeus with a narrow trans- 

 parent edge, truncate in front; clypeus with apical margin 0.8 as 

 wide as base, 2.5 as broad as long; ratio of lengths of third and fourth 

 antennal joint is 6:6; head 1.4 as broad as long; antennae yellowish 

 below, brown above; wings hyaline, veins and stigma yellowish; 

 parameres more typical of those of the nearctic species, very short, 

 very broad, the section apicad of cross line about equal in length 

 to the basal section; the broad protuberances at base of parameres 

 not horizontal (as is generally the case) but at an angle of about 45°, 

 broader than usual; a very few long hairs on outside edge of volsellae, 

 whole genitalia with less hahs than usual; parapenial lobes and 

 aedeagus broader than usual; raised triangle on base of subgenital 

 plate closed at basal fourth, a sharp ridge extending from there to 

 apex, fewer setae around base than usual. 



Length of head and thorax 3.0 mm,, abdomen 3.0 mm., fore^dng 

 5.3 mm., rear wing 3.3 mm. ; length genitalia 0.66 mm., width 0.40 mm., 

 length subgenital plate 0.73 mm., width 0.43 mm. 



Holotype male: With Zephyranthus bulb, Mexico, W. B. Woods, 

 Apr. 30, 1935, E.Q., 035734 (USNM). 



39. Auplopus anthraciniis, new species 



Figures 32, 33 



Holotype male. Bod}' black, abdomen with sides slightly yellowish ; 

 all coxae black, foretrochanters black above, yellowish beneath, the 

 last two pairs trochanters black; forefemora and tibiae reddish yellow; 

 midfemora reddish with base black, midtibiae reddish beneath, 

 blacker above; posterior femora with basal third black, knees also 

 black, tibiae black; basal joint of forebasitarsi slightly j^ellowish, 

 the rest of foretarsi and all of middle and posterior tarsi black; anten- 

 nae yellowish beneath, black above (joints beyond ninth lost) ; apical 

 edge of clypeus slightly wavy, slightly produced in center and slightly 

 concave each side, a very narrow rim, which is hairless and opaque; 

 face and clypeus silvery, the underside of head and thorax with long 

 rather shaggy looking hair; cl3T)eus with apical margin 0.8 as broad 

 as base, 1.8 as broad as long; head a little less than 1.2 as broad as 

 long; ratio of lengths of third and fourth antennal joints is 10:9; 

 upper interocular distance (14) is equal to the lower; wings hyaline, 

 veins and stigma dark; the basal vein in forewing almost interstitial 

 with transverse, apicad of transverse by the diameter of a vein; in 



