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



and dusky antennae and the linear impression on the base of 

 the vertex will certainly distinguish it. I have one female 

 taken at San Diego in April, 1913, that I believe belongs here. 

 It has the elytra shorter, with the cuneus proportionately short- 

 ened and .the sides of the pronotum almost rectilinear, but it 

 has the same rounded pronotal angles, linear impression on the 

 base of the vertex, dusky antennae and fuscous vestiture. 



Type, male, from Alpine, in author's collection. Para- 

 types in Museum of California Academy of Sciences (No. 307) 

 and in author's collection. 



9. Orthotylus uniformis, new species. 



Aspect of the preceding, the head and beneath becoming more 

 or less yellowish. Length 53^-6mm. to the tip of the mem- 

 brane. 



Head more oblique than in the allied forms, leaving the 

 apex more pointed when viewed from above. Eyes prominent, 

 rounded, viewed from the side elongated and somewhat ob- 

 lique. Vertex slightly flattened, the basal carina but feebly 

 distinguished. Front but slightly convex; clypeus prominent; 

 facial angle rather less than a right angle. Pronotum strongly 

 narrowed before, rather flat, the callosities but little promi- 

 nent, sides unusually oblique, slightly concavely arcuated ; hum- 

 eri prominent. Elytra long, the apex of the abdomen scarcely 

 surpassing the base of the cuneus in the male, almost reach- 

 ing to its tip in the female. Rostrum long, reaching on to 

 the hind coxae. 



Dextral hook of the male genitalia short, straight, ligulate, 

 its extreme apex incurved and subacute; sinistral hook long, 

 curved in almost a semicircle, the apex slender and acuminate. 

 Both hooks white in the dried specimens. 



Color a uniform pale yellowish-green, becoming paler on 

 the callosities, head, legs and lower surface; tip of the tarsi 

 and of the rostrum black. Apical two joints of the antennae 

 infuscated. Upper surface sparingly clothed with short pale 

 hairs. Membrane very faintly enfumed and highly iridescent, 

 the nervures green. 



Described from 15 examples representing both sexes, taken 

 about Fallen Leaf Lake near Lake Tahoe, Calif., at an alti- 



