Vol. VI] VAN DUZEE— SPECIES OF ORTHOTYLUS 121 



fuscous, the commissure and apex whitish ; corium fuscous, the 

 claval suture, slender costal nervure and a ray along the prin- 

 cipal nervure, whitish; cuneus fuscous with the basal half 

 almost white. Membrane lightly infuscated, with a darker 

 ray beyond the angle, the nervures fuscous. Sides of the 

 pleural pieces and venter fuscous, the middle line broadly whit- 

 ish. Legs tinged with yellow, deeper toward the apex of the 

 hind femora; tip of the tarsi black. Upper surface sparsely 

 clothed with pale hairs. In the female the pale colors are 

 much extended. 



Described from two males and two females taken by me 

 at Effingham, Kansas, Pueblo and Denver, Colo., all in July, 

 1900. This species is readily recognized by the yellowish 

 tinge to the vertex and pronotum with conspicuous black lat- 

 eral margins to the latter and the fulvous base of the scutellum. 



Type, male, and allotype in author's collection. Paratypes 

 in collection of the author and in Museum of California Acad- 

 emy of Sciences (No. 327). 



29. Orthotylus knighti, new species. 



Allied to lateralis, but longer winged and darker colored, 

 the elytra black with a subcostal pale vitta, which in the female 

 reaches and largely covers the cuneus. Length 5mm. to tip 

 of membrane. 



Head short as in lateralis. Vertex much depressed and 

 sunken below the level of the eyes ; basal impression triangular 

 with the fovae discernable, the basal carina slender but dis- 

 tinct. Front but little convex, polished ; clypeus small, strongly 

 arched before. Eyes very large and prominent ; in the male as 

 wide as the vertex, about one-half narrower in the female; 

 viewed from the side, broad ovate, reaching nearly to the gula. 

 Pronotum much narrowed anteriorly; sides distinctly arcu- 

 ated, the humeri prominent and the anterior angles subacute; 

 callosities prominent, oblique. Elytra long, parallel, the costa 

 straight ; cuneus slender. Basal lobe of the scutellum well ex- 

 posed. Antennae as in lateralis, the basal joint perhaps a little 

 longer. 



Dextral hook of the male genitalia black, subtriangular, 

 transverse, its lower edge straight, the upper oblique with the 



