Vol. VIII] VAN DUZEE—NEW SPECIES HEMIPTERA 299 



the conspicuous long pale hairs clothing the upper surface of 

 that species. 



Holotype (No. 421), male, allotype (No. 422), female, 

 and paratypes in collection of the California Academy of 

 Sciences. 



29. Orthotylus albocostatus, new species 



Aspect of uniformis; closely allied to fratcrniis but larger and 

 broader with the costal margin of the elytra quite broadly 

 whitish; length 5-5^ mm. 



Head about as in uniformis, longer and more oblique than in fratcrnus; 

 length below the eye distinctly greater than the greatest length of the 

 eye ; clypeus very prominent and convex ; vertex but little flattened, the 

 carina feeble. Pronotum short, transverse ; humeri prominent, flattened ; 

 sides sharply carinate ; callosities but little elevated, in the female dis- 

 tinguished by a transverse depression. Elytra long, the costa feebly arcu- 

 ated in the male, more strongly in the female ; cuneus in the male much 

 elongated. Rostrum reaching the apex of the intermediate coxae. Antennae 

 about as in fratcrnus; first segment thicker, armed within near the apex 

 with two or three stiff fuscous hairs which are longer than the thickness 

 of the segment; second segment distinctly longer than the basal width of 

 the pronotum; third nearly equal to second; fourth hardly longer than 

 first. Surface clothed with soft white hairs which become scale-like and 

 conspicuous on the pronotum and head and are intermixed with stiffer 

 fuscous ones on the elytra interior to the radial vein. Male genitalia small ; 

 dextral clasper nearly circular, pedicellate ; sinistral scarcely twice the size 

 of the dextral, transverse or a little oblique. 



Color pale dull green, becoming still paler on the head and pronotum and 

 darker on the clavus. Pronotum and scutelkun with an obscurely paler 

 median line ; costal margin to the radial vein whitish hyaline, this pale 

 margin fading out on the cuneus. Membrane moderately infuscated, paler 

 in the areoles, the veins pale or green. Antennae green at base becoming 

 infuscated at apex. Tip of rostrum, apex of tarsi and tibial bristles black. 



Described from twelve male and nine female examples taken 

 at Keen Camp, San Jacinto Mountains, Calif., June 12, 1917, 

 on a species of Gilia with slender foliage, and one male taken in 

 Muir Woods, Marin county, CaHf., May 19, 1915. This form 

 may be distinguished among our green species by its long head, 

 the pale costal margin and the fact that the brown hairs on the 

 elytra are found only on the surface interior to the radial vein. 



Holotype (No. 423), male, and allotype (No. 424), female, 

 from Keen Camp in collection of the California Academy of 

 Sciences. 



Paratypes in the collection of the Academy and in that of the 

 author. 



