Vol. VII] GIFFARD— CALIFORNIA HEMIPTERA 283 



165. Plagiognathus diversus, new species 



Allied to politus ; black, anterior and intermediate femora pale; tibiae 

 strongly dotted ; corium often pale at base ; base of cuneus broadly white. 

 Length Syi-AYz mm. 



Head broad and short, projecting beyond the eye for less than the 

 length of the eye. Vertex distinctly convex, its base apparently angled, 

 this angle fitting into a shallow emargination of the pronotum ; facial 

 angle almost a right angle. Pronotum transverse, a little longer, with the 

 rectilinear sides more oblique in the male. Elytra subopaque ; long and 

 nearly parallel in the male, the abdomen attaining the middle of the cun- 

 eus; shorter and more ovate in the female, with the abdomen reaching 

 to beyond the tip of the cuneus. Rostrum reaching to the apex of the 

 intermediate coxae. Hind femora broad, especially in the female. 



Color t)lack ; base of the vertex with an oval pale spot against each 

 eye, sometimes almost obsolete ; third and fourth antennal segments and 

 apex of the second pale. Pronotum sometimes touched with pale poste- 

 riorly; clavus at times pale at base; corium usually in the female, some- 

 times in the male, with a pale, area which may be extended down the 

 claval suture and along the costa, the commissural nervure pale beyond the 

 tip of the clavus. Base of the cuneus with a broad whitish lunule, its 

 apical margin sometimes touched with pale. Membrane blackish, ob- 

 scurely edged with pale at base, especially at apex of the cuneus, the ner- 

 vures concolorous, becoming pale at apex. Beneath black, the coxae pale 

 beyond their base. Anterior and often the intermediate femora pale; 

 hind femora black ; all the tibiae white dotted with black and armed 

 with black spines. Tarsi black on apical one-half, obscurely pale at base. 

 Rostrum pale at base. In fresh examples the superior surface is clothed 

 with a pale pubescence. 



Described from numerous examples taken by Mr. Giffard 

 at Niles Canyon. June 13-17, 1917; Santa Cruz Co., June 7, 

 1917, and from near Stockton, May 30, 1917. 



The long parallel black elytra ornamented with a white 

 lunule on the cuneus gives the male quite a different aspect 

 from the shorter and paler female. 



Holotype (No. 357), male, from Niles Canyon, in collec- 

 tion of the California Academy of Sciences. 



Allotype, female, from Niles Canyon, in collection of Mr. 

 Giffard. 



Paratypes in both collections and in that of the author. 



166. Plagiognathus diversus cruralis, new variety 



Differs from the species in having the legs darkened so the anterior 

 and intermediate femora are black or nearly so and the tibiae are fuscous 

 or black, thus obliterating the black points. The pale points on the vertex 

 are scarcely discernible and the antennae are almost entirely black. One 

 structural difference appears here : the second segment of the antennae 

 is distinctly thicker than in the species, but in all other characters the 

 forms intergrade and it does not seem advisable to establish this as a 

 new species. 



