92 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



31, Costal nervure concolorous, dark against the dark areas ; elytra black- 

 ish, the base of the cuneus and a wedge-shaped mark along the claval 

 suture pale, 25. cuneatns, n. sp. 



— , Costal nervure black with a pale vitta between it and the black dorsal 

 vitta, 1 32. 



32, Ground color above fulvous or salmon, elytra black, the fulvous bor- 

 der of the corium not attaining the costa, the extreme edge being 

 black, 31. submarginatus Say. 



— , Elytra black with a subcostal whitish vitta covering most of the 



cuneus ; posterior disk of the pronotum and the legs fulvous, 



29. knighti, n. sp. 



Group I (Subgenus Orthotylus Fieb.) 

 1. Orthotylus insignis, new species. 



Larger and more slender than any alHed species ; elongated 

 or elliptical; bright grass-green becoming yellowish about the 

 head and base of the femora; first joint of the antennae yellow- 

 ish with its immediate base conspicuously black, length 5-6mm., 

 width l^mm. 



Vertex much depressed posteriorly, leaving the basal carina 

 strongly elevated ; front but moderately convex. Eyes promi- 

 nent, viewed from the side shorter than in the allied forms. 

 Antennae unusually long, about reaching to the apex of the 

 membrane; basal joint longer than the head in the female, 

 much longer in the male; second joint two and a half times the 

 length of the first ; third about two-thirds the length of the sec- 

 ond; fourth shorter than the first. Rostrum short, not attain- 

 ing the apex of the intermediate coxae. Pronotum short, flat, 

 showing a median carina and lateral carinate margins ; deeply 

 impressed around the prominent callosities, thus making the 

 anterior margin appear thickened; sides strongly oblique, the 

 anterior angles broadly rounded. Elytra long, elliptical in the 

 female, the tip of the cuneus scarcely surpassing the tip of the 

 abdomen; in the male nearly parallel, the costal margin very 

 gently arcuated, the corium a little surpassing the tip of the 

 abdomen. Legs unusually long and slender, the tibiae with a 

 few weak bristles. 



Dextral hook of the male genitalia very large, recurved 

 from near its base, where there is an acute projection from the 

 inner angle, the upper member greatly produced in a long 

 curved brown spine-like process almost attaining the opposite 



