NEW SPIDER WASPS — DREISBACH 183 



broad as long; lateral ocelli only 1.3 as far from eyes as each other; 

 wings hyaline, shghtly dark, very slightly darker at apex; first recur- 

 rent vein meets second cubital cell in center, and the second recurrent 

 meets third cubital in center; veins of wings almost black. 



Length head and thorax 5.3 mm., abdomen 5.3 mm., forewings 9.6 

 mm., rear wings 6.4 mm. 



Holotype female: Xilitla, San Luis Potosi, Mexico, July 23, 1954, 

 K. R. Dreisbach (USNM). 



50. Anplopus dietzi, new species 



Holotype female. Completely black, with no visible color except 

 abdomen is slightly brownish; head and thorax duU, abdomen shining; 

 mandibles black with reddish tip, palpi brown at base yellow at apex; 

 coxae and first two pairs trochanters black, last pair trochanters 

 yellowish beneath at apex; forefemora reddish on inside and at apex, 

 the last two pairs all reddish; all tibiae and tarsi black; antennae 

 yellowish beneath beyond second joint, brown above; head, thorax 

 and apical half of abdominal sternum pubescent; a hahless reddish, 

 translucent rim around the whole front margin and sides of clypeus, 

 widest in the middle where it projects in the usual manner; clypeus 

 raised in middle of surface and 1.66 as wide as long; head a little more 

 than 1.1 as broad as long; ratio of lengths of thu'd and fourth antennal 

 joints is 15:12; upper interocular distance (16) equal to the lower; 

 lateral ocelli 2.0 as far from eyes as each other; wings hyaUne, first 

 recmTent vein meets second cubital cell about the middle and the 

 second recurrent meets third cubital cell beyond basal fourth; wings 

 slightly darker at apex. 



Length head and thorax 4.6 mm., abdomen 4.0 mm., fore wing 8.6 mm., 

 rear wing 6.3 mm. 



Holotype female: Anc6n, Canal Zone, August 1919, G 161, H. F. 

 Dietz (USNM). 



51. Anplopus minutus, new species 



Holotype female. Clj^peus and face black, rest of head dull greenish 

 blue; dorsum of thorax (except propodeum) about the same color as 

 head, both with a faint purplish iridescence; the propodeum and sides 

 of thorax with a much brighter greenish blue color with only the 

 faintest purplish cast; abdomen a shining blue; upright hair on vertex 

 and front black; clypeus projecting forward at apex in center more 

 than usual, a hairless translucent rim around front edge; clypeus 1.7 as 

 broad as long; ratio of lengths of third and fourth antennal joints is 

 8:8; head 0.9 as long as broad; upper interocular distance (14) equal to 

 the lower ; lateral ocelli 2.0 as far from eyes as each other; wings hyaline 

 very slightly darker at tip; first recurrent vein meets the second 



