Vol. VII] GIFFARD— CALIFORNIA HEMIPTERA 281 



distinguish it from that subfamily. It is very near Psalliis 

 jiinipcri but may be distinguished by its larger size, more dis- 

 tinct sanguineous irrorations, and perhaps most readily, by the 

 .strongly dotted tibiae. Like jwiipcri it has an unicolorous 

 membrane. 



Holotype (No. 354), male, in collection of the California 

 Academy of Sciences. 



Allotype, female, in collection of Mr. Giffard. 



162. Gerhardiclla delicatns (Uhl.) Niles Canyon. May 23, 

 1917; June 13, 1917; Portola Valley, San Mateo Co., May 4, 

 1917; Santa Cruz Co., June 8, 1917; Tahoe City, Aumist 23' 

 1916. ^ ^ . 



163. Plagiognathus mundus, new species 



More polished and clearly marked than obscunts; femora black- 

 cuneus black with its margins more or less broadiv pale. Length 4-5 mm! 



Head more produced than in obscunts; when viewed from the side 

 Its length below the eye is fully equal to the length of the eye, while in 

 obscunis It IS distinctly less. Antennae, pronotum, scutellum and elytra 

 as in the allied species; second antennal segment as long as the basal 

 width of the pronotum; third and fourth slender; third two-thirds the 

 length of the second; fourth one-half the third. Pronotum trapezoidal, 

 much narrowed anteriorly, sides rectilinear; callosities inconspicuous.' 

 Elytra almost parallel, a little wider posteriorly, its greatest width in 

 the male at apex of the corium; sides rectilinear in the male, but little 

 arcuated in the female. Rostrum attaining the apex of the hind coxje. 



Color black, polished, marked with pale greenish or yellowish. Vertex 

 with a greenish spot, which is broader than in obscuru's and often is ex- 

 tended so as to cover much of the surface as in that species. Antenna 

 black with the apical two segments pale. Pronotum black, onlv in the 

 palest specimens with the disk posteriorly greenish. Scutellum black, 

 rarely with the posterior field greenish in whole or in part. Elytra black, 

 normally marked as in obscurus with a pale area at base which may be' 

 extended along the claval suture and discal nervure and very rarely along 

 the costa; tip of the clavus and the commissure beyond usuallv touched 

 with pale ; cuneus black with its margins more or less broadly" pale, the 

 black at times reduced to a small median spot or the pale may be reduced 

 to a mere trace on the base and tip. In obscurus the apex is black with 

 the base more or less broadly pale. Membrane black; the nervures usu- 

 ally pale, especially at apex, where there may be a pale spot adjoining. 

 Beneath black ; hind edge of the propleura, apex of the coxae and base of 

 the femora greenish. Tibiae whitish, coarsely dotted with black; tarsi 

 black, the second segment mostly pale, the tips of the femora usually pale. 

 Rostrum black. 



Described from numerous examples taken by Mr. Giffard 

 at Niles Canyon, June 13, 1917, and Contra Costa Co., June 

 14, 1917. This species varies in the extent of its pale mark- 

 ings as does obscurus but may be distinguished by the black 

 femora and by its having the cuneus black on its middle and 



