472 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



One female specimen from Manitou. 



Named in kindly remembrance of Dr. William Bell, and of his courte- 

 sies to me at Manitou, Colo. 



6. J. dimsiis, new sp. 



Chiefly black, ground-color of head and pronotum yellow, hemelytra 

 hyaline, with two or three dusky bands across them. Head a little 

 tumid, including the eyes, wider than the pronotum ; vertex moderately 

 long, bluntly rounded in front, yellow, with a transverse, quadran- 

 gular black spot anteriorly, which is divided in the middle, and sends 

 a short, slender branch along the inner margin of the eye ; each side 

 posteriorly is a round, black dot ; sometimes the black spot is broken 

 into four smaller ones 5 face yellow, with a black stripe running down 

 the middle to the tip of the tylus, expanded in the center; each side 

 with a series of lines, and across the tip of the front a broad band ; 

 inner cheeks broadly margined all round, a spot beneath the eye and 

 the depressed sutures black ; antennae piceous, occasionally banded at 

 base with yellow. Eyes pale brown, set on a yellow base. Pronotum 

 transverse, moderately flat, transversely rugulose, pale yellow, with 

 two oblique blackish streaks on the middle, which converge anteriorly 

 and touch two transverse, small, black spots ; the stripes are occa- 

 sionally straight, and widened posteriorly ; the two spots are usually 

 indented; the posterior margin almost truncated ; the anterior margin 

 broadly arcuated, a little curved downward on the sides anteriorly ; 

 latero-posterior margins absent, but the lateral margin straight, leaving 

 the posterior angle rectangular, a little rounded ; deflexed sides very 

 narrow, sinuated, black interiorly ; pleural j)ieces black, partly margined 

 behind with yellow. Coxee yellow, generally clouded with blackish ; 

 femora lineated exteriorly with blackish ; the tibise yellow, anterior and 

 intermediate ones lineated with blackish, and the posterior ones with 

 black dots at the bases of the piceous spines ; tarsal joints tipped with 

 black, and with the nails and pulvilli of the same color. Scutellum yel- 

 low, broadly black at base, and on the middle is a quadrangular, black 

 line, which is bilobed on its posterior boundary. Hemelytra dusky hya- 

 line, a little brownish at base and on the suture, apical margin of the 

 corium, and apex of the clavus; before the middle is an angular double 

 spot, running backward slenderly, and behind the middle a broad, in- 

 complete band of two or three spots ; nervures pale yellow, brown at 

 tip; inner nervure of the clavus usually yellow, with a brown interrup- 

 tion at base and another at tip. Wings hyaline, the nervures a little 

 brown near the tip. Tergum black, margined with yellow each side, and 

 on the two segments preceding the tip, and the tip itself yellow ; venter 

 yellow, black at base, and sometimes on the middle of the posterior seg- 

 ments ; the apical segment more or less ocherous. 



Length to the tip of abdomen 2|-3 millimeters ; to tip of hemelytra 

 3|-4^ millimeters. Width of pronotum 1-1^ millimeters. 



