356 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser 



pilose; front above and an area immediately above the base of the antennae 

 with black pile; front with the usual triangular pollinose spots. Antennae 

 black; third joint yellow below, elongate oval, slightly over twice as long as 

 wide. Eyes evenly short whitish pilose; post orbital pile and cilia white. 

 Thorax, scutellum and abdomen shining black; scutellum with or without a 

 shallow apical groove; hind margins of second and third segments black pilose. 

 Legs black; tips of all the femora, narrow base of hind and basal half of front 

 four tibiae and their tips, and basal two joints of their tarsi, yellowish; some; 

 times the first three tarsal joints yellow with the apical black. Wings hyaline- 

 stigma yellowish; last section of the fifth vein slightly bent at its middle. 



Two males, three females, Guelph and Vineland, 

 Ontario (Curran) and one pair, Wisconsin (Fluke). 



I have no doubt that this is Loew's Pipiza salax. 

 There are minor variations in my specimens in the color 

 of the pile, which here appears to be darker. His de- 

 scription, "hypopygium much longer than in other 

 species" undoubtedly applies here. The whole de- 

 scription applies very well. I give the synonymy of 

 P. radicum Walsh & Riley and P. pistica Williston from 

 a careful examination of the two species and an examina- 

 tion of the females of H. comntata and H. californica 

 confirms my determination. 



12. Heringia comutata, new species (Fig. 27) 



Habitat: Oregon! California! Medium size; white 

 pilose; third antennal joint less than twice as long as 

 wide in the male. 



Length 6.5 to 7 mm. Male: Face and frons shining metallic black with a 

 bluish reflection; face receding, very slightly rounded above; white pilose, a 

 few darker hairs on the cheeks; front black pilose, immediately above antennae 

 in middle and upper angle, with whitish pile; vertical triangle with whitish 

 pile, sometimes a few black hairs in front. Antennae black; third joint usually 

 obscurely reddish below, one and one half times longer than wide, widest at the 

 apical three-fourths then sharply rounded. Eyes brownish pilose, whitish 

 below; post orbital pile and cilia white. Thorax, scutellum and abdomen 

 shining black; thorax and scutellum white or slightly yellowish pilose, the pile 

 more yellowish anteriorly; scutellum coarsely punctulate. Abdomen with 

 the usual areas opaque; pile white, with the usual black pilose areas less ex- 

 tensive and less conspicuous than usual; left side of hypopygium white pilose, 

 right side black pilose. Legs black; tips of all the femora, base of hind tibiae, 

 basal_ quarter of front and basal half of middle tibiae, first two joints and tips 

 of middle tarsi, yellow; first joint of anterior tarsi piceous yellow. Wings 

 cinereous hyaline; stigma luteous. 



Female: Very much like H. salax, but differs in having the antennae en- 

 tirely black and the third joint a little more pointed; pile slightly longer 

 throughout and inclined to be yellowish on the front and thorax; black pile 

 across the front less intense; scutellum with a well-marked apical groove; 

 legs less extensively yellow, usually luteous or piceous instead of yellow; ter- 

 mination of the discal cell less acute; last section of the fifth vein nearly straight. 



Holotype, male, No. 847, and allotype, female, No. 



