140 



spaces on the anterior lobe between the median and lateral carina; depressed 

 like shallow basins. Elj'tra and wings abont as long as the abdomen. Pos- 

 terior femora inflated near the base, attenuate near the tips. Pectus not 

 broader than the head. AntennsB filiform, as long as the head and pronotum. 

 Anal appendages of the female very short and blunt. 



Color (siccus). — Yellow, varied with brown. Head yellow ; occiput 

 dotted with brown, sometimes forming imperfect, waved lines; antennae 

 pale at the base, the remainder brown. Pronotum with a pale-yellow cross 

 on the back ; beginning at the posterior lateral angles of the disk, the stripes 

 converge anteriorly, and, crossing about the middle, fade on the anterior lobe; 

 there is a triangular brown spot between these stripes on the posterior lobe; 

 sides brownish, fading below. Elytra brown ; a yellow stripe along the inner 

 margin ; lower half dotted with dark-brown. Wings transparent; veins white, 

 except at the apex, where they are dusky (it is possible these are slightly 

 tinged with blue when living). Posterior femora yellow, with two or three 

 oblique brownish sjDots near the upper edge, which cross and become distinct 

 bands on the inside ; knee brown ; tibiae dusky above and at the tips, rest 

 yellow (bluish in living specimens). 



Dimensions. — 9 Length, 1.07 inches; to tip of elytra, 1.10 inches; to 

 end of pronotum, 34 inch; posterior femora, 0.62 inch. $ Length, 0.88 

 inch ; posterior femora, O.'GO inch. 



Colorado, Wyoming, and Montana (Thomas). 



IlS>©PEI>®lf, Thos. 



Head large, exceeding the thorax in width, widest below; seen from the 

 side presents a somewhat semicircular outline; deflexed below ; occiput large, 

 convex ; vertex sloping, broad, sometimes exhibiting a shallow foveola or de- 

 pression, usually iTiomboidal, with a slight median carina ; frontal costa prom- 

 inent, not sulcate, margins obtuse, and nearly parallel. Antennae nearly as 

 long as the head and thorax, filiform, inserted in deep oblong foveolae. Pro- 

 notum of medium length; sides parallel; sub-truncate in front; posterior 

 margin obtusely rounded; three transverse incisions sub-distinct, the posterior 

 about the middle, cutting the median carina; median carina distinct, lateral 

 obsolete. Elytra shorter than the abdomen in the female, about the length 

 of the abdomen in the male; inflated near the base, narrowed at the apex; 

 two longitudinal nerves dividing the entire surtiice into three nearly equal 

 fields. Posterior femora stout, passing the abdomen ; tibiae enlarged at the 



