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



the transverse veins on the latter pale ; membrane with the narrow margins 

 of the veins and a spot at base pale. Legs brown, paler beneath. 



'Genital lobes of the female a little longer than in compressus, distant, 

 with their inner angles more acute. 



Described from one male taken by the late Rev. G. W. 

 Taylor on Vancouver Island from under bark, March 4, 1898. 

 A female taken at the same time is notable in having the left 

 elytron much abbreviated, the corium not attaining the apex 

 of the scutellum and the rounded membrane reaching only to 

 the second tergal incisure, the left wing complete, almost 

 reaching the apex of the right elytron. This species has the 

 flat surface and pale humeral margins found in compressus 

 but the pronotal margin is shorter and strongly denticulate, 

 the antennae are more slender and the colors are different. 



Holotype, male (No. 683) in collection of the California 

 Academy of Sciences; allotype, female, in collection of the 

 author. 



6. Aradus parshleyi, new species 



Allied to compressus Heid. but with the antennae thinner 

 at base, the latero-anterior margin of pronotum minutely 

 granulate and strongly sinuated and the elytra more strongly 

 marked ; antennae basally and legs brown ; hind margin of 

 humeral lobes and markings on the corium pale. Length 

 8 mm. 



Female : Head a little longer than wide across the eyes ; antenniferous 

 tubercles short, reaching to middle of first segment ; preocular and post- 

 ocular tubercles small, obtuse ; lateral impressed areas smooth anterior 

 to the line of the hind margiu' of the eyes ; base with a slender oblique 

 whitish Hne. Antennae as long as head and pronotum together; seg- 

 ment II as long as III and IV together, regularly thickened to its apex 

 where it is as wide as III; the latter cylindrical and as thick as the 

 anterior femora; IV scarcely shorter than III and but little thinner, about 

 twice as long as I. Rostrum attaining basal one fourth of mesosternum. 

 Pronotum a little wider than its median length, depressed as in compressus; 

 sides broadly expanded and rounded almost to the anterior angles which 

 are right-angled, thus forming a deep sinus; minutely crenulate or granu- 

 lated, the crenulations stronger in the anterior sinus ; carinate lines 

 moderately elevated, the median pair about parallel. Scutellum longer 

 than the pronotum, its basal width two thirds its length ; its surface nearly 

 flat, the sides moderately sinuated before the rounded apex and well 

 elevated. Elytra subparallel, its basal margin somewhat expanded ; mem- 

 brane reaching the genital segment with a number of supernumerary 

 cross-veins. Genital lobes obliquely rounded and well separated ; sixth 

 ventral segment a fourth longer than the truncate fifth segment and 

 emarginate at apex ; basal genital plate tumid, nearly four times as long as 

 the short apical plates. 



