Vol. VIII] VAN DUZEE— NEW SPECIES HEMIPTERA 301 



Pronotum a little broader with the sides more oblique than in vaccini; 

 more strongly depressed anteriorly, the callosities obscure. Basal lobe of 

 scutellum somewhat exposed, Elytral costa feebly arcuated. Claspers 

 similar to those of vaccini. Sinistral narrow, lying along the ventral wall 

 of the segment and reaching to its middle line. Dextral terete, slender, 

 curved and overlapping the sinistral a little. In all specimens before me 

 this clasper is lifted free from the margin and this may be its normal 

 position. 



Color a dead white becoming soiled or testaceous on the head and 

 anterior lobe of pronotum; surface of pronotum minutely dotted with 

 brown omitting its posterior disk. Basal lobe of scutellum clouded 

 with sanguineous which color may invade the base of the posterior 

 lobe. Elytra dotted with black, these dots arranged somewhat in 

 lines, two tows of seven each on the clavus being quite regular; those 

 of the corium paler and more confused, towards the apex carrying 

 brown hairs. Apex of the clavus with a pencil of black hairs and there 

 are three similar clusters on the cuneus, one at its basal angle and two 

 beyond the middle of the inner margin. Thickened vein at base of the 

 membrane sanguineous. Membrane clear white with two fuscous 

 clouds on the apical margin and a few faint brown points on the disk, 

 the veins white. Antennae with a black point near the apex of the first 

 segment and three or four fainter dots on the second, sometimes obsolete. 

 Femora with a few black points, one near the apex of the hind pair being 

 larger. Tibiae strongly dotted. 



Female sometimes brachypterous, then ovate with a shorter pronotum 

 and a soiled white color, more strongly spotted and wanting the sanguin- 

 eous marks. The macropterous female similar to the male. 



Described from three male and three female examples taken 

 on Hymenoclea salsola at Coachella, Calif., May 16, 1917, and 

 at Palm Springs, May 21, 1917. This species is very close to 

 vaccini from Massachusetts but the difference in the food-plant 

 and locality in addition to color characters would seem to war- 

 rant its separation ; vaccini has the femora infuscated or ir- 

 rorate at apex and the disk of the pronotum and scutellum 

 evenly dotted ; it also wants the sanguineous markings and has 

 the dotting of the elytra confined to the corium and fainter and 

 more irregular, and the disk of the membrane without brown 

 points. Both have the pale hairy vestiture. 



Holotype (No. 427), male, allotype (No. 428), female, 

 and paratypes in collection of the California Academy of 

 Sciences. 



Our eight species of Parthenicus may be distinguished by 

 the following key: 



Color, including the membrane, white 1 



Color pale, usually irrorate with sanguineous or mostly sanguineous ; 



membrane fuscous or mostly so 2 



1. Femora irrorate with fuscous at apex; elytral dots omitting the 

 clavus; disk of pronotum and scutellum dotted; no red markings, 

 eastern, on Vaccinum vaccini V. D. 



