450 GEOLOGICAL SURVEY OF THE TEEEITOEIES. 



1)1). Elytra slightly longer than the abdomen ; last ventral seg- 

 ment of the male entire at the tip : 

 c. Spots small, and confined to a median line along the 



disk .femur -rtibrum. 



cc. Spots larger, and equally distributed over the 



elytra * griseus. 



aa. Elytra about as long as the abdomen. 

 &. General color pale yellow : 



c. Hind femora with two oblique black streaks out- 

 side hilituratus. 



CO. Hind femora with three black patches outside . . scriptus. 

 hb. General color not pale yellow : 



c. Hind femora with three straight black bands; lower 

 valves of the ovipositor neary straight at the 



apex pnnctulatus. 



CO. Hind femora with oblique brown bauds; lower valves 



of the ovipositor bent at the apex * occidentalis. 



aaa. Elytra shorter than the abodmen : 



&. Color, pale olive-green ; a pale stripe each side, tbe prono- 



tum * TurnbulUi. 



hh. Color tawny; head and thorax with two broad black 

 stripes repletus. 



C. viridis, nov. sp. PI. II, fig. 3. 



Lateral carinse of the pronotum obsolete. Green, with a white dorsal 

 stripe ; femora banded with red. 



Vertex slightly expanding in front of the eyes, channeled; lateral 

 carinse of the face moderately divergent ; frontal costa sulcate and 

 narrowed below the ocellus. Eyes elongate, large, acuminate above, 

 and approaching unusually near to each other. Pronotum sub-cylin- 

 drical; lateral carinse obliterated ; median carina scarcely perceptible ; 

 the posterior lateral margins nearly straight from the lateral angle 

 to the apex, there being no entering angle at the humerus, this 

 I>oint of the margin being marked only by a slight inward flexure ; 

 the posterior transverse incision only cuts the median carina. Cerci 

 of the male regularly acuminate ; subanal plate entire, sub-truncate 

 at the apex; superanal plate triangular with two sub-medial con- 

 vergent ribs or carinas. The elytra and wings about as long as the ab- 

 domen. The posterior femora reach the tip of the abdomen. 



Color, (dried after immersion in alcohol.) Entirely of a pale greenish- 

 yellow, except as follows : antennae rufous ; tip of the vertex, and a spot 

 beneath the eye, (in most specimens,) fuscous; transverse incisions of 

 the pronotum, and two short lines on the sides, dark. A slightly palei' 

 median stripe is visible on the occiput and pronotum, bordered by pale 

 brown ; posterior lobe of the pronotum tinged with roseate. Tips of 

 the spines and claws black. Elytra and wings pellucid, immaculate. 



The living insect is colored as follows : A bright pea-green, with a 

 white strii^e along the middle of the occiput and i)ronotum ; and one 

 along the angle of each elytron, and one along the edge of the hind 

 femora. A bright red ring around each femur just above the knee; 

 hind tibisB blue. Male and female the same except in size. 



Dimensions. — ? , length, .85 inch ; elytra, .62 inch ; posterior femora, 

 .5 inch. $ , length, .62 inch. 



Colorado, Wyoming, and Kansas. 



* New species. 



