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



base and at apex. Abdomen reaching to tip of cuneus in the female. Legs 

 short for this genus. Dextral male clasper very small ; sinistral broad and 

 angled superiorly at base, curved and lying against ventral margin of 

 genital segment, the apex of which it attains, its apex subacute. 



Color testaceous-white, clear white on the pronotum and el3tra; upper 

 surface clothed with short scale-like deciduous white hairs intermixed with 

 which are a few strongly clavate black ones, imparting a sprinkled effect ; 

 apex of corium with a small fuscous cloud ; apical margins of cuneus nar- 

 rowly infuscated. Callosities testaceous like the head. Membrane minutely 

 and irregularly irrorate with pale brown. Antennae white; extreme tip of 

 first segment fuscous ; apex of second black for a space equal to one half 

 the length of the first segment; third and fourth black; base of third nar- 

 rowly white. Mesothorax beneath black with pale median and lateral 

 vittse. Venter with a broad deep-black vitta on either side attaining the 

 genital segment in the female. Legs white, apex of femora, and extrerne 

 base of tibiae more or less broadly black. A few small points on the tibiae 

 and the base and apex of the tarsi brown. Tibiae clothed with soft white 

 hairs and a few stiff brown bristles. 



Described from one male and two female examples taken on 

 palo-verde growing among the foothills seven miles west of 

 Coachella, Calif., May 16, 1917. The male is immature with 

 the black ventral vittae scarcely indicated. The small eyes, ob- 

 long form, white color, black ventral vittae and the presence of 

 clavate black hairs above will distinguish this well-marked 

 species. 



Holotype (No. 406), female, allotype (No. 407), male, 

 and paratype in collection of the California Academy of 

 Sciences. 



18. Pallacocoris candidus, new species 



Aspect of a Trigonotylus nearly; creamy white throughout 

 and clothed with a soft white pubescence, in fresh examples 

 showing a median line of white hairs on the vertex, pronotum 

 and scutellum ; antennae very long. Length 6 mm. 



Head porrect ; vertex nearly horizontal, viewed from above rounded 

 before and projecting for a third of its length before the eyes; clypeus 

 vertical, strongly convex, its basal suture deep, on a line with the insertion 

 of the antenna ; cheeks prominent, cylindrical ; gula horizontal ; bucculae 

 low. Antennae very long, one fourth longer than the entire body ; first 

 segment stout, linear, as long as the head and pronotum, a little thicker 

 near its base, clothed above with soft appressed white hairs which become 

 shorter at apex, and beneath with matted hairs longer than the thickness 

 of the segment; second segment a little longer than the corium; third and 

 fourth nearly equal to second. Rostrum reaching to near the middle of the 

 venter, the first segment but little surpassing the base of the head. Pro- 

 notum trapezoidal, nearly horizontal, but little narrowed anteriorly; sides 

 straight, carinated ; collum broad, depressed, but poorly distinguished ; cal- 

 losities small, obscure, set far apart; hind margin truncate. Scutellum 

 rather long ; its basal field a little expanded. Elytra long, narrow, parallel. 

 Legs long, hind femora surpassing the abdomen, narrowing from near base 



