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



30. Parthenicus covilleae, new species 



Aspect of picicoUis but paler ; fulvous yellow with uniformly 

 black membrane ; length 3-4 mm. 



Head somewhat less produced than in picicoUis, the extension below the 

 eye rather less than the greatest width of the eye ; clypeus prominent with 

 a deep depression between its base and the apex of the front. yVntennaj 

 similar to those of picicoUis; first segment thickened, scarcely surpassing 

 the apex of the head ; second subequal to third and fourth united. Elytral 

 costa very slightly arcuated. Upper surface clothed with long stiff concol- 

 orous or pale hairs becoming blackish on the disk of the elytra and some- 

 what matted about the apex of the clavus giving that place a blackish aspect 

 in perfect examples. Male claspers small, rounded when viewed from the 

 side ; the dextral subacute and oblique ; the sinistral produced along the 

 ventral wall of the segment to its apex. 



Color a soiled yellowish fulvous, more or less tinged with red, in fully 

 colored examples showing a transverse band covering the scutellum, base of 

 the elytra and the cuneus, reddish. Membrane uniformly deep fuscous, 

 the nervures red ; sometimes there is a small paler lunule at the apex of the 

 cuneus. Legs and antennae paler, the basal segment of the latter more 

 reddish. Tarsal claws black. Abdomen of the male sometimes tinged 

 with green. 



Described from 27 examples, representing both sexes, taken 

 on creasote bush, Covillea mexicana, at Palm Springs and Coa~ 

 chella, Calif., May 18-21, 1917, where it was abundant and just 

 reaching maturity. The uniformly yellowish color and blackish 

 membrane will distinguish this species. Only the most fully 

 colored individuals show indications of sanguineous irrora- 

 tions in the reddish areas on the base of the elytra and cuneus. 



Holotype (No. 425), male from Palm Springs, allotype 

 (No. 426), female from Coachella, and paratypes in collection 

 of the California Academy of Sciences. 



31. Parthenicus candidus, new species 



Closely allied to vaccini, the femora wanting the fuscous 

 dotting but marked with a few black points ; white, dotted with 

 black; base of scutellum and thickened vein at base of mem- 

 brane sanguineous ; membrane white with two marginal spots 

 and a few discal points brown; length 3-3^/2 mm. 



Male : Head short, vertical ; produced below the eye for less than the 

 width of the eye ; clypeus prominent ; its basal incisure distinct. Antennse 

 as in vaccini; first segment but little surpassing the apex of the head, 

 thicker, armed near the apex with two black bristles set in black dots ; sec- 

 ond as long as basal width of pronotum; third two thirds the length of 

 second ; fourth hardly longer than basal. Rostrum attaining the middle 

 of the venter, the first segment passing the middle of the anterior coxae. 



