Vol. XI) CURRAN— REVISION OF THE PIPIZA GROUP 365 



lower corner rectangular, the tibiae then gradually nar- 

 rowing to apex. In the female the pile of the venter is 

 appressed, that of the eyes very short, white. 



Length, 7 mm. Male: Face and front shining black; face slightly rounded 

 below antennae, thence gradually receding to just above oral margin; entirely 

 white pilose; frontal triangle wholly shining, black pilose; antenna? black; 

 third joint yellow below basally, in shape orbicular; vertical triangle black 

 pilose in front; occipital cilia black except at vertex; pile of eyes short, black, 

 becoming shorter and white below. Thorax shining greenish black, thickly 

 short white pilose, with luteous pile about base of wings; scutellum luteous 

 pilose with a broad apical groove. Abdomen shining bronze black, the usual 

 areas opaque; pile short, black; sides of abdomen, more broadly on first two 

 segments, and a small rounded area on each side of third segment, separated 

 from the lateral margin, white pilose; the usual lighter area on the fourth seg- 

 ment brownish pilose; hypopygium with black pile. Legs black; knees, broad 

 base of front four tibiae and their tips, first three joints of front and two of 

 middle tarsi, yellow; middle basitarsi much hollowed beneath. Wings pellucid 

 hyaline; stigma luteous. 



Female: Face less receding than in the male, entirely white pilose; whitish 

 pollinose stripes on the sides broadened just below the antennae; front black 

 pilose, across the middle with cinereous pile, with white at the vertex; frontal 

 pollinose spots connected with the side stripes, very large, separated by less 

 than the width of one spot. Antennae black; second joint luteous; third yellow 

 below at base, in shape elongate-rounded; arista yellow on basal third; eyes 

 very short white pilose. Thorax and scutellum with pile shorter than in the 

 male but entirely white. Abdomen silvery white pilose, the usual areas black 

 pilose. Legs colored as in the male. Last section of fifth vein nearly straight 

 and oblique in both sexes. 



Holotype, male, No. 856, and allotype, female, No. 

 857, Mus. Calif. Acad. Sci., May 25, 1918, F. R. Cole, 

 collector. 



Type locality, Forest Grove, Oregon. 



23. Cnemodon lovetti, new species (Figs. 26, 53) 



Habitat: Oregon! Very closely allied to coxalis and 

 rita but differing in the hind coxal spur which is directed 

 backwards or towards the femora; the pile is darker, 

 the discal cell is widened considerably towards the mar- 

 gin of the wing, and the last section of the fifth vein is 

 long and straight. 



Male: Length, 6.5 mm. Face and frons shining bluish black, black pilose; 

 face somewhat brownish pilose in the middle, slightly rounded above, thence 

 nearly straight to oral margin, sides with a short white pollinose stripe; frons 

 considerably swollen, with a small roundish tubercle above the antennae; 

 vertical triangle and eyes black pilose the pile becoming brownish on lower 

 part of eyes; post orbital cilia and pile black. Antennae black; second and 

 third joints yellowish below; third slightlv longer than broad, sub-circular, 

 flattened above toward base; arista black, slender. Thorax and scutellum 

 shining bluish black, slightly metallic, the scutellum without an apical groove; 

 pile whitish, the front of dorsum and the scutellum with brownish or black 

 pile. Abdomen shining black, black pilose; sides of each segment in middle 

 whitish pilose. Legs black, tips of femora, narrow base of hind tibiae, front 



