208 University of California Publications. [Entomology 



6. Eostrum long, reaching at least to intermediate coxae; pronotum with 



obscure scattering impressed points, but not at all punctate 



7. Horcias Dist. 



— Rostrum short, not surpassing anterior coxae; pronotum obscurely 



punctured 8. Poecilocapsus Rent. 



Division 4. Caps aria Rent. 



Vertex sulcate and transversely striate; second joint of hind tarsi much 

 shorter than first and third i. Platylygus Van D. 



A'ertex more or less polished, scarcely striate or sulcate; first and second 

 tarsal joints subequal 1 



1. Elytra nearly flat, cuneus at most but moderately deflexed 2 



— Elytra more convex, cuneus much deflexed and the fracture deep 6 



2. First and second antennal joints rather thick, the second linear and 



scarcely thinner than the first, or in the female slightly attenuated 

 at base and apex 3 



— Second antennal joint more or less distinctly thickened toward its 



apex; sometimes sublinear but then distinctly thinner than joint 

 one 4 



3. Base of vertex flattened, hind margin carinate; base of scutellum but 



little exposed; elytra oblong, parallel 3. Lygidea Reut. 



— Vertex convex, polished, its base ecarinate; base of scutellum broadly 



exposed; body oval, distinctly broader behind the middle; color 

 red 2, Coccobaphes Uhl. 



4. Third and fourth antennal joints abruptly thinner and together 



scarcely more than half the length of the second joint, which is 



linear and moderately thickened but thinner than first 



6. Tropidosteptes Uhl. 



— Antennae slender, third and fourth joints setaceous and together at 



least two-thirds the length of the second 5 



5. Form more ovate; sides of the pronotum carinate 7. Neoborus Dist. 



— Form more elongated and subparallel; sides of the pronotum ecarinate 



8. Xenoborus Reut. 



6. Inner cheeks tumidly convex, forming almost a tubercle beyond base 



of antennae; second antennal joint clavate; pronotum coarsely 

 punctured; head broad behind and concentric with the anterior 

 margin of pronotum 1. Capsus Linn. 



— Inner cheeks convex but not prominently tumid; second antennal joint 



but little thicker at apex; pronotum more finely punctured; eyes 

 rounded behind, head not concentric with the anterior margin of 

 pronotum 5. Lygus Hahn. 



Division 5. Deraeocorari\ Douglas and Scott 



Vertex transversely striate and longitudinally sulcate; second joint of 

 hind tarsi much shorter than first and third 1 



Vertex more or less polished, scarcely striate or sulcate; first and second 

 tarsal joints subequal 2 



