OSBORN AND BALL STUDIES OF NORTH AMERICAN JASSOIDEA. 63 



yellowish cinereous above with two small points on vertex and some- 

 times the angles of scutellum black. Length, 2.5 mm., width, 

 I. 25 mm. 



Vertex stout and broad, one-half the length of the pronotum, slightly 

 inflated in the middle, the posterior margin touching the pronotum. 

 Face convex, moderately broad, the outer angle of the gense obscure, 

 frontal suture strongly rounding. Front broad, roundingly narrowing, 

 much broader than clypeus, clypeus narrow, parallel-margined, lorae 

 more than twice longer than wide, longer than clypeus. Pronotum 

 coarsely transversely rugose posteriorly, finely granulated just behind 

 the e\e, much narrower than eyes, more than twice wider than long, 

 anterior margin broadly rounding, including two-thirds of the length, 

 humeral margin very oblique attaining eyes, posterior margin short, 

 roundingly emarginate. Elytra short, slightly exceeding abdomen, the 

 venation weak, apical cells short, the second often not separated from 

 the first anteapical, forming a long, narrow, slightly curved cell. 



Color: Pale cinereous, much paler than in uhleri. Vertex touched 

 with yellowish, two small round dots slightly farther from each other 

 than from the eyes, black. Face pale creamy-yellow above with dark 

 red ocelli, reddish below. Pronotum pale cinereous, unmarked. Elytra 

 pale, sub-hyaline gray with light indistinct nervures. 



Genitalia: $, ultimate ventral segment short and broad, shorter 

 than in sanguinolenta, posterior margin slightly rounding with a faint 

 median notch; c?, valve very short and broad, posterior margin round- 

 ing, often nearly concealed under the ultimate segment, plates nearly 

 twice longer than broad, roundingly narrowing to the truncate daik- 

 tipped apex. 



Described from numerous examples from Iowa and Colorado. 



The Iowa examples were taken at Little Rock and Sioux City in 

 July, from high gravelly points where plants characteristic of the plain 

 region, such as Bouteloas and Artemisias predominated and from 

 which several other species of western Hemiptera were taken. The Col- 

 orado specimens were received through the kindness of Prof Gillette. 



Larva: Form of the larvae oi sanguinolenta nearly, head somewhat 

 stronger, the dark bands almost wanting. Head broad, somewhat in- 

 flated, eyes wider than thorax, thorax narrow, the wing pads shorter, 

 abdomen slightly carinate and curved upwards; color, creamy- white, 

 two distinct spots on vertex as in adult. Face pale-reddish, pronotum 

 light, a single oblique line on either wing pad, abdomen paler, not 

 banded. Length scarcely 2 mm. 



