GEOLOGICAL SUEVEY OF THE TEEEITOEIES. 461 



cous spots ; the middle field nearly clear, a few minute pale dots only 

 being visible. Wings, of tbe alcoholic specimens, a dull yellow at base, 

 bat when living this portion is red ; beyond which a tolerably broad 

 fuscous band crosses, narrowed in front and behind, curving round the 

 l^osterior margin but not reaching the anal angle, a submarginal ray 

 extends up the front nearly to the base ; apex pellucid, with the nerves 

 partly ocherous and partly dusky. Anterior and middle tarsi with two 

 black annulations. Antennae with alternate rings of yellow and fus- 

 cous. 



Color of the living insect, as appears from the short field-note made 

 in regard to it, is as follows : Wings red at the base ; antenni3e with alter- 

 nate rings of brown and red 5 general color asli-grajT^, marked with fus- 

 cous dots and spots. 



Dimensions. — 9 , length, 1 inch ; elytra, .87 inch ; posterior femora, 

 .54 inch ; posterial tibiae, .45 inch. ^ , length, .62 to .7 inch ; elytra, .7 

 inch. 



Found in Colorado and Wyoming. My attention was first called to 

 this species a short distance above FortFetterman, on the North Platte, 

 but I afterward found it among my collections made in Colorado. 



(E. Kioioa, nov. sp. 



Of small size ; head as CE. longipes, Charp., of Europe ; occiput as- 

 cending, the front part standing above the disk of the pronotum ; ver- 

 tex broad, transverse; central foveola very distinct, quadrilateral, 

 opening in front by a short channel, which connects it with the sulcus 

 of the frontal costa ; lateral foveolte distinct ; frontal costa rather nar- 

 row, distinctly sulcate throughout its length; eyes very prominent, 

 slightly oblong. Pronotum more than usually contracted, a little in 

 advance of the middle, tricarinate ; median carina distinct, but not very 

 prominent, twice notched, posterior notch about the middle, the middle 

 portion shortest ; lateral carinse distinct on the posterior lobe, indistinct 

 on the others ; apical angle slightly obtuse, but not blunt ; disk some- 

 what rugose. Elytra and wings rather narrow, passing the abdomen. 



Color, (dried after long immersion in alcohol.) — Dull clay -yellow, with 

 fuscous dots and spots; occiput with two indistinct fuscous stripes; disk 

 of the posterior lobe of the pronotum dusky brovf n in the center, mar- 

 gins yellow ; there are, also, generally two dusky spots on each side of 

 the pronotum, near the front margin. The elytra have three fuscous 

 bands across them, the one nearest the apex generally more or less 

 obliterated by the transparency of this part; the apex pellucid; wings 

 l^ellucid ; nerves of the anterior portion dusky, the rest ocherous. Pos- 

 terior femora, with three indistinct brownish bands exteriorly, the inside 

 black next the base, and a smaller spot of the same color near the apex, 

 rest yellow; tibise dull yellow, (probably blue when living.) slightly 

 dusky at the base and apex. 



Dimensions. — 9 , length, .87 inch ; elytra equal the body ; posterior 

 femora, .53 inch ; posterior tibiae, .47 inch. 



I have found this species only in Colorado, east of the mountains. 



(E. gracilis, nov. sp. 



Male. — Small size ; slender ; vertex narrow ; central foveola elon- 

 gate, open in front, the sharp margins continuous with the likewise 

 sharp margins of the narrow and deeply sulcate frontal costa. Prono- 

 tum tricarinate ; the median carina slightly prominent, twice notched, 

 the front portion the most elevated, the middle portion very short, tuber- 

 culiform ; the posterior incision a littl^ in advance of the middle ; lateral 



