GEOLOGICAL SURVEY OF THE TEERITOEIES. 453 



a broad, yeilowisli stripe on eacli side, from the upper angle of the eye to 

 the tip of the pronotnni ; the inclosed middle space pale brown ; median 

 carina yellowish. Below the yellow stripes, on each side, is a broad, ir- 

 regular brownish stripe, reaching from the eye to the tip of the pronotum. 

 A bright yellow stripe runs from the base of the elytra to the posterior 

 cox?e. Elytra pale ash-brown, with an irregular row of rather small, 

 dim brown spots along the disk, one or two sometimes distinguishable 

 above and below ; nervules mostly yellow ; wings pellucid, with some 

 dark nerves near the apex ; posterior femora crossed by three oblique, 

 dim brown bands ; tibise bluish. When living, it is of a pale pea-green, 

 the dorsal stripes whitish ; hind tibiae blue. 



Dimensions. — ?, length, .76 inch; elytra, .43 inch ; posterior femora, 

 .43 inch. ^ , length, .56 to .60 inch. 



There is a strongly marked variety, which I have included in this 

 species, but which may be distinct. 



Yar. a. — Paler throughout ; space between the stripes almost uniform 

 in color with the stripes ; lateral brown stripes often narrower or obliter- 

 ated ; elytra, narrower and longer, reaching nearly or quite to the ex- 

 tremity of the abdomen. The male appears to be uniformly longer and 

 larger. 



jSTamed in honor of Dr. Charles S. Turnbull, of Philadelphia, who first 

 discovered it. 



Found only between Eed Buttes and Independence Rock, Wyoming. 



C. occidentalism nov.. sp. PI. II, fig. 2. 



Much like 6. femur-rubrum, Burm. Male cerci very broad and fla-t ; 

 hind femora banded ; tibi£e blue. 



Frontal costa generally flat above the ocellus and sulcate below it, 

 but sometimes sulcate above; lateral carinee sharp and divergent; 

 median carina distinct on the posterior lobe of the pronotum, barely 

 visible in front ; the transverse impressions very distinct ; elytra and 

 wings as long as the abdomen; anterior and middle femora rather 

 small and slender ; posterior femora, in the female, a little shorter than 

 the abdomen ; valves of the ovipositor, especially the uxjper ones, long 

 and deeply excavated. The cerci of the male are unusually broad and 

 flat, enlarged at the base and suddenly decreasing in breadth near the 

 middle ; the last ventral segment apparently terminates at the tip with 

 a broad, blunt tooth ; i^rosternal spine broad at base, blunt and trans- 

 verse. 



Color, (dried after immersion in alcohol.) — Much like C. feniur-ruhrum, 

 but more of a pale, ashen hue ; face dull brownish-yellow ; a triangu- 

 lar dusky spot on the occiput, with the apex toward the front ; a cres- 

 cent of minute black dots around the back part of the eyes ; the dark 

 band behind each eye as usual ; pronotum pale reddish-brown above. 

 Elytra ash-brown, W'ith a row of small brown spots along the middle of 

 the disk, reaching from near the base two-thirds the distance to the tip, 

 ceasing, or growing dim, at the point where the nervules become sud- 

 denly less distinct ; a few dots are found above and below this middle 

 row in some specimens. Wings transparent ; nerves yellowish, except 

 at the apex, where they are dusky. The posterior femora are crossed 

 by three oblique brownish bands — inside, yellowish; apex, dusky: 

 tibiaa, bluish -yellow ; blue, when living. 



Di7netisions. — §, length, .88 inch; elytra, .60 inch; posterior femora, 

 .47 inch. ^ , length, .69 inch. 



Found in Eastern Wyoming, from the mouth of Laramie Elver to Eed 

 Buttes. 



