100 O. Kröbftr: 



Segments black, covered with gray pollcn, pile black; legs, except 

 knees and pulvilli, black; vvings tinged with brown, veins black, 

 first posterior cell closed, petiolate, with the petiole longer than 

 the small cross-vein. Length 5 mm. 



One specimen: Arizona. 



Near Z. palpalis Robts., but differs in the short palpi, shining 

 spot on humeri, and whoJly Pollinose fourth abdominal segment." 



20. Zodion bicolor Will. 1. c. p. 35. 



(J: , .Black, gray pollinose; face and cheeks yellowish white, 

 front fulvous, darker on upper half, antennae red, hairs and arista 

 black, occiput largely, and proboscis with the small palpi wholly 

 black, thorax thickly gray pollinose, pile black, halteres yellow; 

 first segment of abdomen black, remaining segments red, pile 

 black, legs reddish, with front and middle femora on top and hind 

 ones near apex, all tibiae and tarsi near apices black; wings, except 

 base, tinged with brown, first posterior cell closed and petiolate, 

 petiole shorter than the small cross-vein. Length 5 mm. 



Two specimens; Douglas county, Kansas." 



21. Zodion abitus Will. 1. c, p. 33. 



$: ,, Black, grayish pollinose; face and cheeks yellow, in some 

 light silvery, front black on upper part, fulvous near antennae, 

 occiput black on Upper half, proboscis black, palpi small, yellow, 

 antennae rufous, with black hairs, arista black at base, mesonotum 

 black, gray pollinose, with two short indistinct black lines, pleurae 

 and scutellum black, gray pollinose, the former devoid of pile 

 except on sterno-pleurae ; abdomen black, subshining, sides of 

 second, midde and sides of third and following segments gray 

 Pollinose; legs except knees, uniformly reddish-yellow; slightly 

 infuscate, lighter near base, veins brown first posterior cell closed 

 and petiolate, petiole shorter than the small cross-vein. Length 

 4,5 mm. 



Two specimens; Kansas and Massachusetts. 



This species is close to Z. fulvifrons Say, but differs from it 

 in size, the sub-shining abdomen, and closed posterior cell." 



22. Zodion auricaudatum Will. 



?: Untergesicht und Stirn satt ockerfarben, Untergesicht 

 intensiv silberweißglänzend; die Gruben seidig weißgelb. Oberer 

 Teil der Stirn und Scheitel tiefschwarz. Grenze der Farben gerade; 

 sehr scharf. Augenrand linienfein weiß eingefaßt . Jederseits neben 

 den Ozellen tritt ein kleiner, gelber Tomentfleck auf. Hinterkopf 

 mattschwarz, nach unten etwas in Grau übergehend. Beborstung 

 zart, schwarz. Rüssel etwa zweimal kopflang, stark, schwarz. 

 Fühler kurz, dunkel rotbraun; drittes Glied kaum halb so lang als 

 das zweite. Erstes und zweites Glied dicht schwarz beborstet. 

 Unterseite vom zweiten und dritten Glied rotgelb. Borste kurz 



