Vol. VII] GIFFARD— CALIFORNIA HEMIPTERA 293 



1917; Santa Cruz Co., July 7, 1917; Monterey Co., June 11, 

 1917; Muir Woods, July 15, 1917; Niles Canyon, May, 1916. 



235. Pogaronia ij-punctata trinnata Ball. Muir Woods, 

 July 15, 1917; Niles Canyon, May, 1916; Contra Costa Co., 

 June 14, 1917; Dublin Canyon, May 6, 1917; Tunnel Road, 

 near Piedmont, May 13, 1917; Walnut Creek, May 13, 1917. 



236. Bathysmato phorus uhleri Ball. Portola Valley, San 

 Mateo Co., May 4. 1917; Dublin Canyon, May 6. 1917; Mt. 

 Diablo, July 23, 1916. 



2Z7. Errhomcnclliis macuhitiis (G. & B.) Fallen Leaf Lake, 

 August 21, 1916. 



238. Gypona caua Burm. Los Altos, July 26, 1916; So- 

 noma Valley near Cloverdale, August 3, 1916; Mt. Diablo, 

 1400 feet, July 23, 1916, young. 



239. Gypona augnlata Spangb. San Mateo Co., June 17, 

 20, 1917; Niles Canyon, July 14, 1916; near Stockton, May 

 30, 1917; Yosemite, June, 1916. 



240. Xerophlooa viridis Fabr. Crystal Springs, San Mateo 

 Co., June 25, 1916; Niles Canyon, May, 1916. 



241. Acucephalus giffardi, new species 



Still smaller than Xestocephalus ptilicarius and more oblong, not so 

 much widened medially; mottled and transversely banded with black and 

 white. Length 2^ - 3 mm. 



Head wider than the pronotum, rounded in both diameters in both 

 sexes. Vertex nearly right angled before, the apex subacute ; hind margin 

 broadly arcuated, middle line a little elevated, with an oval slightly de- 

 pressed area either side next the base; surface closely and evenly punc- 

 tured. Front broad and short, moderately convex, closely minutely punc- 

 tured ; clypeus broad, oblong, its sides very slightly concave, attaining the 

 apex of the cheeks. Pronotum a little shorter than the vertex, distinctly, 

 transversely wrinkled; anterior and posterior margins nearly parallel. 

 Elytra short, oblong, hardly attaining the apex of the abdomen in the 

 female, but little surpassing it in the male; costa gently arcuated, apex 

 rounded. 



Hind margins of the last ventral segment of the female parallel with 

 the anterior, broadly subangularly excavated. Pygofers stout, armed with 

 a cluster of stiff bristles at apex. Valve of the male short, broadly angled ; 

 plates short and broad, triangular, their sides arcuated at base, then nearly 

 straight to the subacute apex ; fringed with short, stiff bristles. 



Color black ; apex of the head with an oval pale spot enclosing a pair 

 of angular marks and connected along the margin with a pale annulus 

 about the ocelli. Base of vertex with a broad pale band, often tridentate 

 at the middle ; basal two-thirds of pronotum white ; scutellum with a pale 

 hind Ixjrder. Elytra with the apex, a broad basal and a post-medial trans- 

 verse band white; between these bands is a large white costal spot, some- 

 times more or less merged with the anterior band ; the nervures concol- 



