93 



St. brtinne(i)«, Tlios., Geol. Siirv. Terr., 1870, 280. 



Female. — Vertex l)roa(l, part in front of the eyes short and not expanding 

 at the sides, margins hut sHghtl}' raised; lateral fovcola^ very shallow, elon- 

 gate ohlong ; the top of the head convex. Face less ohliqiic than usual, 

 slightly arcuate below ; frontal costa broad, flat, and not sulcate, margins 

 punctured, obsolete below. Pronotum short, scarcely longer than the head, 

 slightly constricted in the middle ; the three carina? about equal, the lateral 

 rather distant, converging in front, diverging posteriorly, slightly curved; 

 transverse incision distinct, sinuous, situated about the middle ; hind border 

 obtusely rounded. Elytra and wings nearly or quite as long as the abdomen. 

 Antennas reach the tip of the pronotum, filiform, sliglitly flattened. Upper 

 valves of the ovipositor scarcely, if at all, exserted. 



Color (dried after long immersion in alcohol). — Keddish-Iirown with 

 yellow. A yellow stripe of moderate width extends from the tip of the vertex 

 along the middle of the pronotum and upon the upper margins of the elytra. 

 Lateral carinte of the pronotum yellow ; interspaces of the disk black. Elytra 

 brownish at base, transparent at the apex, the entire middle field marked 

 with brownish spots, a few smaller ones also in the lower field ; upper margin 

 yellow. Posterior femora crossed externally by three quite oblique brown 

 bands, which extend over upon the upper portion of the inside. Male much 

 smaller ; face more arcuate. 



Dimensions. — 9 Length, 1 inch; elytra, 0.70 inch; hind femora, 0.52 

 inch. (J Length, 0.65 inch ; hind femora, 0.40 inch. 



Colorado, Wyoming (Thomas). 



Remark. — This and the next species have been place^ in this genus 

 with much doubt, as they appear to approach CEdipoda in several respects. 



St. qtiadi-iBBuactaEatus, Thos., Geol. Surv. Terr., 1870, 280. 



Vertex of moderate width, deflexed, margins slightly elevated, no lateral 

 foveolpe. Face sub-oblique or nearly vertical ; frontal costa slightly promi- 

 nent, margins square, nearly parallel, slightly expanding l)elow, Hat or very 

 .slightly sulcate ; lateral carinae sub-distinct, moderately divergent below. 

 Pronotum short, depth greater than the length, slightly constricted in the 

 middle, tricarinale ; the three carinse about equal, distinct, the lateral ap- 

 proximate a little in advance of the middle, slightly diverging in front, more 

 divergent posteriorly, cut l)y tlie posterior sinuate sulcus a little behind the 



