44 TRANSACTIONS OF THE [1889 



the middle line, antennal lobes broad triangular, with a curved, 

 short, carinate median border; inferior cheeks and labrum 

 black, hoary pubescent, rostrum piceous, somewhat yellow at 

 base ; antennae steel blue-black. Pronotum transverse, with 

 the anterior and posterior margins yellow, and the lateral 

 margins oblique, recurved as far as to the shallow notch before 

 the moderately produced humeral angles, base of the humeral 

 angles with a forked wrinkle ; anterior angles bluntly rounded ; 

 the mesonotum rather evenly convex, covered like the adjoining 

 segments with bronze scales, the base with a short yellow streak 

 each side ; mesothoracic cross yellow, with black, long, acute 

 arms, bounded in front by a wide depression, and with the 

 posterior excavation wide and shallow, the area behind the cross 

 yellow ; pleural segments pellicular, testaceous, piceous on the 

 middle, hoary pubescent ; acetabular processes of the hind legs 

 long, auriculate, white ; opercula small, transverse, pediform. 

 Legs piceous, hoary pubescent, more or less orange on the 

 sutures, tibiae and undersides of the middle and posterior 

 femora. Hemelytra piceous, opaque as far as to the first series 

 of transverse veins, which form a curve of a pale color across 

 the entire width; areoles wide, veins stout, black, the opaque 

 area spread with minute bronze scales and pubescence, the costal 

 margin and exterior vein of the basal areole pale yellow, the 

 radial areole long, acute at tip ; base of both wing-covers and 

 wings orange, the membrane hyaline, tinged with brown ; wings 

 slightly tinged with brown, and with black veins. Venter 

 piceous, silvery pubescent, the posterior and lateral margins of 

 the segments rufous. Length to end of venter 14-15 millims; 

 to tip of wing-covers 18 millims. Alar expanse 36 millims. 

 Breadth of base of pronotum 6-6^ millims. Two females are 

 the only representatives of the species thus far known. They 

 were captured near Los Angeles, California, and were sent to 

 me for identification by Mr. D. W. Coquillett. The male is 

 still a desideratum, which it would be particularly important to 

 secure, as the forms of the genital pieces and sonory segments 

 of this sex alFord important structural characters. 



