80 PROCEEDINGS OF THE ACADEMY OF 



(E. jEqualis, Say. 



Colorado. Appears to be replaced further south by (E. pruinosa, Thos., a 

 very closely allied species. 



(E. pruinosa, nov. sp. 



About the size and somewhat similar in coloring and appearance to (E. 

 ;< '/Wilis, Say, but broader across the meso- and meta-thorax. Head oblong, 

 seen from the front or side ; occiput convex, ascending: vertex strongly de- 

 clined, broad, flat, not foveolate, very slightly margined, slightly contracted 

 between the eyes ; frontal ridge prominent and rounded anteriorly above, 

 somewhat sulfate below, expanding at the ocellus, and slightly contracted 

 immediately below it, divergent and fading near the clypeus ; lateral carinas 

 distinct, sinuous and divergent below (in the males these earinse are more 

 distinct and extended than in the females). Pronotum short, sub-cylindrical 

 and somewhat coarctate in front, expanded and more angulate posteriorly ; 

 cros* incisions 1 and 3 apparent, 2 very indistinct in the male, apparent on the 

 sides in the females, 1 arcuate above, 3 slightly sinuous and situated about 

 the middle of the pronotum ; central earinse merely a raised line ; the lateral 

 carina- obliterated in front, obtuse on the posterior lobe ; truncate in front, 

 posterior angle obtuse. Elytra and wings considerably longer than the ab- 

 domen. Posterior femora broad, not reaching the extremity of the abdomen. 

 Antenna? stout, reaching the middle of the abdomen in the males, a little 

 shorter in the females, joints distinct. 



Male. Color (siccus). Ash-colored varied with brown. Head pruinose, 

 except the vertex, which is mouse-colored. Pronotum lilac on the back, sides 

 pruinose. Elytra crossed by three broad fuscus bands, middle one the broadest 

 and darkest; apex transparent. Wings transparent yellow at the base; 

 crossed by a dusky band as in OS. xqualis ; apex pellucid. Posterior femora 

 pruinose at the base, crossed by an oblique brown band beyond the middle ; 

 tip brown ; basal half of the inside black ; tibia? orange yelJow ; tarsi pale. 

 Venter pale yellow. Antenna; fuscus. 



Female differs as follows: Seldom pruinose; occiput brown; pronotum 

 reddLh-brown, varied with dots and lines of yellow. The front part of the 

 pronotum more regular and smooth ; the posterior lobe of each is densely 

 punctured, but that of the female is intersected by irregular, slightly raised 

 lines. The dark lines across the elytra narrower, paler and more irregular. 



Dimensions. Male. Length 1-10 in.; to tip of elytra 1-42 in.; pronotum -26 

 in.: femur -GO in.; tibia -58 in. Female. Length 1-48 in.; to tip Of elytra 

 1-70 in. ; pronotum -34 in. ; femur -7(j in. ; tibiae -70 in. 



Hub. Quite abundant in Southern Colorado and Northern New Mexico. 



CE. cincta, nov. sp. 



Female.. Very similar in appearance and coloring to (E. legualis, but in the 

 carvings of the head approaching the Tomonoli (Sauss) of which (E sulphurea, 

 Burin., may be taken as the type. Vertex channeled ; the margins strongly 

 and sharply elevated, waved, descending ; truncate squarely in front ; a slight 

 median line visible. Frontal ridge vertical, straight, sulcate, narrowed im- 

 mediately below the antenna?, expanding at the base, reaching the transverse 

 suture ; lateral carina? distinct, divergent. Pronotum rugose, tricarinate, 

 truncate in front, angled at the tip ; median carina only a raised line, cut by 

 incisions, 1 and 3 ; lateral carina? distinct on the posterior lobe, obliterated in 

 front; coarctate in front, expanding posteriorly; incision 3 (posterior) situ- 

 ated before the middle. Elytra narrow, passing the abdomen one-third their 

 length ; wings nearly as long. Posterior femora not passing the abdomen. 

 Antenna? reaching beyond the pronotum slightly. 



Color (siccus). Rusty brown varied with lighter and darker shades. Face 

 and the sides of the pronotum yellow mottled with brown; two black bauds 

 paas round the front, one immediatelv above and the other just below the 



[July, 



