113 



€E. wyoming'iana, Thos., Geol. Surv. Terr., 1871, 4G2. 



Very similar to CE. collaris, Scudd., but differs in size, vertex, and the 

 distribution of the spots on the elytra. Central foveola of the vertex slightly 

 elongate ; the sharp margins not quite meeting in front, but continuous with 

 the sides of the frontal costa; frontal costa narrow, rather deeply sulcate, 

 expanding below, reaching the clypeus. Median carina oC the pronotum 

 prominent, sub-cristate, with a very narrow, but deep, oblique notch, a little 

 in advance of the middle, the top slightly arcuate; anterior margin slightly 

 angled, posterior extremity acute-angled ; lateral carina3 distinct. Antennae 

 slightly passing the thorax. 



Color (dried after immersion in alcohol). — Dull clay-yellow, mottled and 

 spotted with brown and fuscous. Face and sides of the head and pronotum 

 minutely dotted with brown; two short brown stripes ou the side of the pro- 

 notum reaching from the front to the third incision. Elytra pale ashen-yel- 

 low, semi-transparent at the apex, with a broad stripe of fuscous dots and 

 small spots along the middle field from the base to the apex ; an indistinct 

 pale line along the dorsal angle ; the dorsal margin near the base dotted with 

 brown or fuscous ; lower margin faintly dotted. Wings transparent-yellow at 

 base, apical third transparent, with dusky nerves ; a moderately broad black 

 band between, its width equal one-fourth the length of the wing, curving 

 round tlie hind margin to the anal angle; a short blunt ray extends up the 

 front margin a very short distance toward the base — one-third the distance. 

 Hind femora and tibise as in collaris. 



Dimensions. — 9 Length, 1 to 1.05 inches; elytra, about equal the body; 

 hind femora, 0.62 inch ; hind tibiae, 0.54 inch. $ Length, 0.8 inch ; elytra, 

 0^5 inch. 



Eastern Wyoming (Thomas). 



This may be but a variety of CE. collaris, and I give it as distinct with 

 considerable doubt. 



<E. collaris, Scudd , Hayden's Geol. Surv. Neb., 250. 



Central foveola of the vertex rather broader than long in the female ; in 

 themale very slightly elongate; frontal costa flat or convex above the ocellus, 

 with a shallow sulcus below; sides nearly parallel. Median carina of the 

 pronotum prominent, sub-cristate, with a very narrow but deep oblique notch 

 a little in advance of the middle; the top slightly arcuate; lateral carinae 

 15 A 



