90 Psyche [June 



the knob of the halteres whitish. Wings grayish hyaline ; fourth 

 vein with the thin outer section bent back so as to reach the wing 

 margin a Httle back of the apex of the wing. 



Female: Agrees with the male very closely except that the third 

 antennal joint is small and rounded and the general color is more 

 golden or coppery. 



Described from three males and five females taken at Saltair, 

 Great Salt Lake, Utah, June 8; and two males and one female from 

 Carriso Creek, San Diego Co., California. Type in the author's 

 collection. 



Easily distinguished from synformoides Wheeler by the third 

 antennal joint being shorter and the hair of the fore tibiae being 

 very short, while in Wheeler's species it is very long and conspicuous. 

 From texanus sp. nov. it is separated by the third antennal joint 

 being more angulated below near the tip, while in texanus it is 

 evenly rounded below. 



Asyndetus texanus sp. nov. 



Male: Length, '■Z-'i.8 mm. Face short, green with thin white pol- 

 len; front wider than the face, green, shining, without pollen except 

 just above the antennae; antennae black, third joint more brownish, 

 large, twice as long as wide, rounded below, nearly straight 

 above (Fig. 2) ; arista inserted near the middle above. Thorax 

 green, shining. Abdomen somewhat more coppery, incisures 

 blackish; hypopygium small, imbedded, without visable append- 

 ages, the bristles at tip stout but short. Coxae and femora black, 

 shining, with slight green reflections; fore and middle tibiae dark 

 yellowish, with short hair; fore tibiae with a few scattering bristles 

 above; middle tibiae with two bristles, one at first and one at 

 second third; hind tibiae black, shining; fore and middle tarsi 

 about as long as their tibite, blackened towards their tips; hind 

 tarsi black, shorter than their tibiae. Tegulae, their cilia and the 

 halteres yellow. Wings grayish hyaline; third vein nearly straight; 

 fourth vein delicate, gently bent, ending just back of the apex of 

 the wing. 



Female: Agrees with the male in color, venation, and bristles 

 of the legs. Third antennal joint small, scarcely as long as wide, 

 rounded at tip. 



