280 GEOLOGICAL SURVEY OF THE TERRITORIES. 



extremity obtuse-angled; tricarinate; median carina slightly elevated, 

 entire; lateral carina? converging before the middle, expanding pos- 

 teriorly, slightly arcuate in this part; cross incisions indistinct, and all 

 on the anterior half; anal appendages of moderate length ; elytra and 

 -wings a little longer than the abdomen. 



Color (siccus) : Testaceous brown, varied with ashy green. Face 

 greenish, varied with light and dark shades ; upper portion of the cheeks 

 and cranium brown; a very narrow yellow line running from the eye to 

 the lateral carina of the pronotum. Pronotum testaceous, the anterior 

 lobes being darkest ; sides brown ; posterior lobe an ashy green, with a 

 dusky median stripe. Elytra pale reddish brown, translucent at the 

 apex; fuscus spots along the middle field and lower border. Venter 

 and pectus dull yellow. 



Male: Differs from the female only in size; in the face being more 

 rounded ; the upper portions of the head and pronotum being darker; 

 and the spots on the inside of the femora not so dark. 



Dimensions : Female — length, 1 inch ; to tip of the elytra, 1.1 inch ; to 

 end of pronotum, .35 inch ; antennae, about the same ; femur, .52 inch. 

 Male — length, .65 inch ; femur, .40 inch. 



Habitat: First seen on the Arkansas in the vicinity of Canon City; 

 found in abundance on a species of Obione. 



St. brunneus, nov. sp. — Female : Somewhat similar to St. propinguans 

 ( Scudd. ) in size and appearance, but rather larger. Yertex broad, scarcely 

 expanding in front of the eyes ; angle rounded ; apex blunt, margins 

 raised; a faint median line visible. Frontal ridge convex, punctate on 

 the margins, expanding below, not depressed at the ocellus ; seen from 

 the side arcuate. Pronotum sub-truncate in front, posterior angle 

 rounded; slightly convergent in the middle; the three carina? about 

 equally prominent ; the three transverse incisions visible on the dorsum; 

 3 is situated about the middle and is the only one that cuts the median 

 carina. Elytra narrow, about the length of the abdomen; wings about 

 the same length. Posterior femora just the length of the abdomen. 

 Prosternum transversely con rex in front ; the posterior part slightly 

 excavated in the middle. The superior anal corniculi covered by the 

 hood-like extension of the last abdominal segment ; lower pair rather 

 short and slender. Antenna? reach the tip of the pronotum. 



Color (siccus) : Reddish brown. The vertex and the face bright red- 

 dish brown, bordered each side by a yellow stripe which descends in 

 front of the eyes ; parts of the mouth yellow ; cranium brown, palest in 

 the middle; a narrow yellow line runs from the eye to the lateral carina 

 of the pronotum. Pronotum brown. Wings hyaline, the nerves of the 

 apical portion dark. Femora on the disk testaceous ; beneath yellow ; 

 inside crossed by two black bands. Tibia? surrounded by an indistinct 

 yellow ring below the knee ; rest a dull yellow (probably blue when 

 alive.) Venter and pectus dull yellow. 



Male : Differs only in size and as follows: the face more arcuate; the 

 upper portions of the head and pronotum darker ; inside of the femora 

 not so dark. 



Dimensions: Female — length, 1 inch; to tip of the elytra, 1.10 inch; to 

 end of pronotum, .35 inch; antenna?, .35 inch; femur, .52; inch. Male — 

 length, .65 inch ; femur, .40 inch. 



Habitat: Found with preceding; and probably in Eastern Wyoming. 



St. quadri-maeidatus, nov. sp. — A little smaller than St. obionus, simi- 

 lar in shape. Occiput convex, ascending ; vertex of moderate width, 

 not expanded in front of the eyes, front margins raised, meeting in a 

 blunt right- angle; face slightly arcuate, deflexed below; frontal costa 



