Vol. VII] GIFFARD— CALIFORNIA HEMIPTERA 277 



two males from Santa Cruz Co., June 7, 1917. Those from 

 Mt. Tamalpais are clearly marked and I consider them typi- 

 cal. The dark reddish forms are from the Sierra but they 

 scarcely require a distinct name. 



Holotype (No. 348). male, from Mt. Tamalpais, in the col- 

 lection of the California Academy of Sciences. 



Allotype, female, from Mt. Tamalpais, in collection of Mr. 

 Giffard. 



Paratypes in both collections and that of the author. 



154. Parthenicus giffardi, new species 



Form and size of picicollis nearly; above white, sides of the head and 

 pronotum, a band on the base of the elytra covering the scutellum and the 

 femora dark sanguineous ; membrane black. Length 4-4>4 mm. 



Head small, similar in the two sexes ; eyes prominent, bead-like, when 

 viewed from the side oblong and nearly vertical ; apex of the head 

 produced before the eyes a distance equal to the width of the eye ; line of 

 the face regularly arcuated ; vertex about the width of the eye. Basal 

 segment of the antennae as long as the space between their bases ; second 

 little longer than the basal width of the pronotum ; third and fourth to- 

 gether nearly as long as the second; fourth about two-thirds the third. 

 Pronotum transverse, much narrowed anteriorly, the sides strongly oblique 

 and rectilinear; surface impunctate, a little roughened anteriorly; callo- 

 sities obscure. Elytra long, nearly parallel, the abdomen scarcely attain- 

 ing the fracture in the male, a little surpassing it in the female ; surface 

 of the elytra impunctate, moderately polished. Hind femora considerably 

 expanded and flattened. 



Color creamy white, clothed above with pale pubescence, which is 

 easily rubbed off; basal segment of the antennae, sides and lower surface 

 of the head and pronotum, the pectoral pieces, a transverse band on the 

 base of the elytra covering the scutellum, the slender commissural mar- 

 gin beyond the clavus and all the femora sanguineous-brown. Membrane 

 deep fuscous, the nervures touched with sanguineous at apex, where they 

 rest on a pale spot; tibiae dotted with sanguineous, the spines pale. 



Described from four males and two females taken by Mr. 

 Giffard in Redwood Canyon, August 6, 1916, on Baccahris, 

 and one male taken by Dr. J. C. Bradley at Sisson. Calif., 

 August 19, 1908. One male has the elytra quite strongly 

 suffused with fulvous. 



Holotype (No. 349), male, from Redwood Canyon, in col- 

 lection of the California Academy of Sciences. 



Allotype, female, from Redwood Canyon, in collection of 

 Mr. Giffard. 



Paratypes in both collections and that of the author. 



155. Macrotylus essigi Van D. Crystal Springs, San Mateo 

 Co., June 25. 1916, abundant with the young on tarweed. 



