THE CANADIAN ENTOMOLOGIST 341 



fourths as long as the tibiae and nearly as long as the third and 

 fourth togelher, third and fourth of equal length, fifth distinctly 

 shorter than fourth; middle tibiae with several slender bristles 

 (the specimens before me have from one to four, they seem to 

 be easily broken off) ; middle tarsi about as long as their tibiae, 

 the first joint longer than the remaining four, second nearly as 

 long as the three following and distinctly widened at tip, third 

 and fourth about equal in length and somewhat widened, fifth 

 slender, nearly as long as the preceding two together; hind tarsi 

 scarcely as long as their tibiae. Tegulae, their cilia, and the halters 

 yellow. Wings brownish hyaline; fourth vein ends in the apex 

 of the wing; anal angle prominent. 



Female. — Face wide; thorax more opaque brown; third 

 antennal joint (Fig. 28, B) smaller, about as long as broad, rounded 

 at tip; middle tibiae with several bristles- as in the jnale. 



Described from seven males and se\'eral females taken by 

 J. C. Bradley, in Wild Cat Cn.. San Pablo, Contra Costa Co., 

 Cal., May 20th-25th. 



This is very much like vegetus Wheeler but the thickening of the 

 arista is not close to the tip as in that species, nor so conspicuous; 

 the relative lengths of the joints of the fore tarsi are also different, 

 and the anal angle of the wing is more prominent. 



Nothosympycnus abbreviatus, n. sp. 



Male. — Length 3 mm. Face narrow with silvery white pollen; 

 palpi yellowish; proboscis brown; front bluish but thickly covered 

 with brown pollen so as to conceal the ground colour except on the 

 sides; antennae brown, third joint about as long as wide, somewhat 

 rounded at tip; (Fig. 28, G)' arista very short, blunt. at tip, scarcely 

 as long as the antennae (apparently broken off). Thorax brown, 

 nearly opaque; pleurae black. Abdomen yellowish above at +)ase, 

 beyond the hind margin of the second segment it is black above, 

 somewhat bronzed at tip; venter yellow which colour extends up 

 on the sides of the third and fourth segments; hypopygium and 

 its appendages small. Coxae yellow; fore pair with a silvery lustre 

 and minute pale hairs on the front surface and a few yellowish 

 bristles at tip; middle and hind coxae with a black bristle on the 

 outer surface; femora yellow, the hind pair darkened above at 



