THE CANADIAN ENTOMOLOGIST. 307 



Vertex and face broad and flat ; nervures of elytra tuberculate ; 

 outer anteapical cell short, the outer nervures often faintly outlined. 

 Female segment half longer than penultimate, very slightly produced on 

 middle half; pygofers short and very stout, but little exceeded by the 

 ovipositor. Male valve transverse, excavated either side of a median 

 tooth. Antennas with rather large discs, nearly twice longer than wide, 

 and tapering at both ends. 



Colour : vertex and upper part of face, down to ocelli, in female, 

 fulvous brown, omitting a median line above, pale creamy below. Male : 

 face creamy, washed with fulvous above and usually greenish below, a 

 brown stripe beneath each eye and usually one on the front. Pronotum 

 fulvous brown, a median stripe and a round spot in the middle of either 

 side white ; scutellum fulvous, darker near the basal angles, a definite 

 spot near the apex, and often a pair of irregular ones on the disc ; elytra 

 brownish fulvous, shading to greenish on the costa, the sutural margins 

 fuscous, interrupted by a common white spot on the apices of the outer 

 claval nervures and an obscure white band just back of clavus, usually 

 evident on the first two nervures of corium. 



Described from twenty-four specimens from Vancouver Island, B. C. 

 (Livingstone), North Park, Home, Cunnison and Salida, Colo. 



Idiocerus femoratits, n. sp. 



Resembling altematus, larger and darker ; female with a shorter 

 ovipositor and a longer segment, male with the middle femora greatly 

 inflated, more than five times as large as the anterior ones. Length, 6 

 mm ; width, 2 mm. 



Head very broad ; vertex distinctly curved, sometimes slightly 

 angled in front; face nearly flat, strongly retreating; venation as in 

 altcrtialus, the outer anteapical cell long and parallel margined. Female 

 segment much longer than in altematus, parallel margined or slightly 

 rounding posteriorly, ovipositor exceeding the moderately-long pygofers 

 by about twice its width. Male antennae with small oval discs on long 

 setse. Intermediate femora in male from five to ten times as large as the 

 anterior ones, over half as wide as long. 



Colour : vertex with a pair of rather large round spots, usually 

 obscured by a band of irregular fuscous irrorations that extend down 

 to the face ; lower part of face with a few brown irrorations in female, 

 usually traces of four brown stripes in male ; pronotum irregularly 

 brownish and milky white, with a few black spots on the anterior 



