CERAMBYCID^E 209 



as the body, or ( 9 ) more slender and a little more than half as 

 long. Length 13 mm. Oregon, Vancouver and British Columbia. 



virgatus Lee. 



6 Male slender, deep black, rather strongly shining, the abdomen very 

 slender, pale ferruginous, the elytral vitta rather near the suture 

 and becoming broad basally, gradually fine posteriorly and disap- 

 pearing before the apex; head densely punctato-rugose, briefly 

 conical basally, the eyes small; antennae slender, black, not quite 

 as long as the body, the basal joint much longer than the fourth, 

 third longer than the fifth; prothorax elongate, narrowed but very 

 little from base to apex, the constrictions and lateral tubercle well 

 developed ; surface scarcely at all canaliculate, finely, closely punctate 

 and with stiff, moderately abundant, yellowish-cinereous pubescence; 

 elytra strongly, sinuously tapering, one-half wider than the pro- 

 thorax and between three and four times as long, minutely punctate, 

 sparsely laterally, with very short, not dense and rather inconspicuous 

 cinereous pubescence, laid obliquely from the suture to the outer 

 limit of the pale vitta, almost wanting thence to the sides, the lateral 

 bead pale basally, the apical truncature very narrow, oblique, 

 the sutural angle obtuse; abdomen bright fer-ruginous, very slender 

 and cylindric, the fifth segment broadly arcuato-truncate. Female 

 larger and stouter than the male, with only feebly tapering elytra, 

 nearly similar otherwise but with rather denser pubescence, still 

 smaller eyes and slightly shorter though barely more slender antennae, 

 about three-fourths as long as the body; abdomen much broader, 

 less cylindric, more pubescent, less bright though pale ferruginous, 

 the apical margins of the segments feebly infuscate; fifth ventral 

 broad and transverse, the obtuse apex with the surface arched 

 horizontally for a short space near each side to receive the elevated 

 sides of the concave genital segment, the surface apically also feebly 

 impressed at the middle; last dorsal broadly, arcuately truncate, 

 with broadly rounded angles, the notch at the middle broad, very 

 feeble and barely traceable. Length (c? 1 ) 1 1.5, ( 9 ) 14.0 mm. ; width 

 (cf ) 2.8, ( 9 ) 4.0 mm. California (Lake Co.) pacificus n. sp. 



Male small and still more slender, nearly as in the preceding, except 

 that the eyes are more prominent, the antennae still more slender and 

 finely filiform, with the basal joint much shorter and more slender, 

 but little longer than the fourth, the third barely at all longer than 

 the fifth and the sutural black vitta very narrow and more indefi- 

 nite, the broad dark marginal vitta not black but pale brown, 

 blackish at the humeri, the abdomen similar but apically much more 

 sparsely punctate, with the fifth segment longer, being a little longer 

 than the fourth and more strongly and evenly rounded throughout 

 the apex. Female differing from the same sex of pacificus, which it 

 nearly resembles in coloration, in its much smaller size and narrower 

 build, the antennae as in the male but a little shorter, the abdomen 

 narrower, very much less pubescent, more shining, blacker, the 

 segments rufo-piceous basally or in a transverse medial band, the 

 fifth segment more angulate at apex, with the arches and median 

 T. L. Casey, Mem. Col. IV, Oct. 1913. 



