j 26 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



18. Lopidea bifurca, new species 



Allied to marginata; yellowish brown, becoming clearer 

 on the costal margin and cuneus. Length 5 y 2 mm. 



Surface a little polished, clothed with scattering minute white deciduous 

 hairs; base of vertex flattened with an angular impression each side near 

 the basal carina ; sides of pronotum more sinuated with the humeral angles 

 more prominent than in marginata; apical lobe of scutellum scarcely im- 

 pressed at base; costa feebly arcuated. Sinistral male clasper broad, sub- 

 triangular, its abruptly incurved apex notched above and incised, with 

 the ventral member blunt, the dorsal acute; dextral clasper very broad, 

 slightly wider at apex, abruptly bent inward beyond the middle, the broad 

 thin apex incised, having an acute tooth above and a squarish lobe below 

 with its oblique apex recurved and minutely crenulate. In marginata the 

 dextral clasper is longer and narrower, nearly parallel, with its apex oblique 

 and entire or nearly so. 



Color, pale fuscous-brown becoming yellowish along the costa and on 

 anterior and lateral margins of pronotum; cuneus clear testaceous-yellow; 

 membrane smoky, darker at base ; head tinged with fulvous, base of vertex, 

 a broad arcuate vitta either side on front and clypeus, black; antennae black, 

 rather slender, with basal segment much thicker; callosities black; legs pale 

 brownish touched with fuscous on the femora, tip of tibiae and tarsi ; beneath 

 varied with pale fuscous and brown, becoming whitish on the pleurae and coxae; 

 rostrum varied with black. 



Described from 40 examples taken by me from a whitish 

 weed growing along the railroad tracks at Colestin, Jack- 

 son Co., Oregon, August 1, 1918. This species has an im- 

 mature look but this material is fully pigmented. Its dull 

 colors match well the flower heads on which it lives. 



Holotype, male, No. 775, and allotype, female, No. 776, 

 Mus. Calif. Acad. Sci; paratypes in Academy's collection 



Type locality, Colestin, Jackson County, Oregon. 



19. Lopidea puella, new species 



Smaller than marginata; smoky brown, the costa narrowly 

 and the cuneus entirely whitish. Length 4^ mm. 



Surface moderately polished, clothed with short black hairs and a few 

 white scale-like hairs; front strongly convex, base of vertex feebly impressed; 

 antennae short, segment I half as long as width of vertex; segment II shorter 

 than width of pronotum at base, angular impression between the collosities 

 very deep; sides of pronotum feebly arcuated, the carinate edge carried around 

 the rounded humeri to basal angles of scutellum; elytral costa scarcely arcu- 

 ated. Sinistral male clasper broad, subovate; dextral subtriangular at base, 

 its dorsal angle armed with an acute erect spine, apical member bent at 

 right angles across the aperture of the segment, elongate triangular, obtuse, 

 longitudinally furrowed. 



Color, testaceous or smoky brown; callosities, antenna? and head black, the 

 latter with the orbital margins and cheeks yellowish, sides and anterior mar- 



