Vol. XI] CURRAN— REVISION OF THE PIPIZA GROUP 383 



specimen from Walnut Creek, Calif. This latter speci- 

 men was destroyed in transit at a later date. 



In this species the face is short and evenly thinly 

 pollinose with no median bare stripe. 



48. Pipiza macrofemoralis, new species (Figs. 55, 56, 57) 

 Habitat: Oregon! Dark species; hind femora excep- 

 tionally thickened for a Pipiza; eyes contiguous for a 

 slightly shorter distance than usual; antennae entirely 

 blackish; hind femora thickest beyond the middle. 



Male: Length, 7.5 to 8 mm. Face and frons shining black, slightly ob- 

 scured by whitish pollen; pile black, rather long. Antennae black; third joint 

 rather finely whitish pollinose, in shape square with the lower corner produced 

 forward. Eyes brownish black pilose; vertical triangle with lighter pile behind 

 and a few yellowish hairs at vertex. Thorax and scutellum shining black with 

 a slightly bluish reflection; pile whitish, across front of thorax and anterior 

 sides of dorsum blackish pilose; pile of pleura? white. Abdomen shining black, 

 the usual areas sub-opaque; pile black, with the usual areas white or whitish; 

 first segment short black pilose; hypopygium black pilose. Legs black; knees 

 except hind ones, and tips of front four tibiae and their tarsi, reddish yellow; 

 hind basitarsi and following joint dilutely reddish; anterior four tarsi more 

 distinctly reddish at base, the tips becoming almost black; hind femora very 

 much thickened, with a well marked spinose area. Wings cinereous hyaline; 

 stigma brown; last section of fourth vein moderately curved. 



Holotype, male, No. 876, Mus. Calif. Acad. Sci., 

 June 8, 1917, F. R. Cole, collector. Paratype, male, 

 Hood River, Oreg., May 25, 1917, F. R. Cole, collector. 



Type locality, Hood River, Oregon. 



A very well marked species. The shape of the third 

 antennal joint is peculiar and cannot be accurately de- 

 scribed as sub-cordate. Since this description was pre- 

 pared a female of a second species, described below as 

 grandif em oralis, has been received from Mr. W. M. 

 Davidson, which I at first thought might belong here. 

 However, upon examination several marked differences 

 were noted. In grandif emoralis the hind femora are 

 more swollen and broadest at the middle, the third 

 antennal joint is larger and marked with yellow, the 

 pile of the head is almost entirely white, the color of 

 the thorax is more metallic bluish and the fly is slightly 

 more robust. 



49. Pipiza grandifemoralis, new species (Figs. 105, 106, 107) 

 Habitat: California! Mostly whitish pilose; hind 

 femora greatly enlarged, largest at the middle. 



