Vol. VII] GIFFARD— CALIFORNIA HEMIPTERA 295 



setae and rudimentary wings. From Memnonia it differs by 

 the narrower and more convex front and more superior ocelli, 

 but seems best placed in the latter genus. 



Holotype (No. 365), male, in collection of the California 

 Academy of Sciences. 



Allotype, female, in collection of Mr. Giffard. 



Paratypes in both collections and in that of the author. 



243. Paraholocratus viridis (Uhl.) Near Stockton, May 



25, 1917; Fallen Leaf Lake, August 21, 1916. 



244. Cochlorhinus pluto Uhl. Santa Cruz Co., June 8, 1917 ; 

 Niles Canyon, May 23, 1917; Contra Costa Co., June 14, 

 1917. 



245. Aligia inscripta (Van D.) Fallen Leaf Lake, 6300 

 feet, August 21, 1916. 



246. Mesamia coloradcnsis (G. & B.). Santa Cruz Co., 

 June 7, 1917: Niles Canyon, May, 1916; Contra Costa Co., 

 June 14, 1917; near Stockton, May 30, 1917. These are 

 darker and more clearly marked than those from Colorado 

 and have the concentric black lines on the edge of the vertex 

 very conspicuous, but they vary much in color and can hardly 

 represent a new species. 



247. Scaphoidcns scalaris Van D. San Francisco. July 18, 

 1916; Muir Woods, July 15, 1917; Mt. Tamalpais, August 

 16, 1916; Walnut Creek, August 10, 1916; Laurel Dell, Lake 

 Co., August 2, 1916. 



248. Scaphoidcns hlandiis Ball. Contra Costa Co., June 14, 

 1917; Lakeport, 2500 feet, August 2, 1916; near Cloverdale, 

 Sonoma Co., August 3, 1916. 



249. Scaphoidcns scrupulosus Ball. Hamilton Station, 

 Tuolumne Co., June, 1916. 



250. Platymctopins acntus (Say). Santa Cruz Co., 1200 

 feet, June 8, 1917; 600 feet, June 9, 1917; Tunnel Road, near 

 Oakland, May 13, 1917; Niles Canyon, June, 1916; May 23, 

 1917. 



251. Platymctopins acntus dnbins Van D. Los Altos, July 



26, 1916; near Cloverdale, Sonoma Co., August 3, 1916; 

 Niles Canyon, May, 1916; June 13, 1917; near Stockton, 

 May 30, 1917; Lake Co., near Lakeport, 2500 feet. August 2, 

 1916; Ashland, Oreg., July 10, 1917. 



