280 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



fewer and more 3'ellovvish and may be nearly or quite wanting in immature 

 individuals. Membrane closely irrorate with pale brown beyond the are- 

 oles, which are faintly clouded with smoky at apex, with the nervures 

 whitish ; at the apex of the cuneus is a whitish spot followed by a trans- 

 verse pale fuscous vitta. Antennae and legs concolorous, greenish white, 

 the hind femora more or less dotted with brown toward their apex ; hind 

 tibis with about seven large black points, each carrying a pair of stout 

 black bristles ; the anterior and intermediate tibiae with fewer black bris- 

 tles and but indistinctly dotted; tarsal claws brown. Venter of the male 

 becoming fulvous or brown along the median line. 



Described from two males and six females taken by Mr. 

 Giffard and myself on Ouercus agrifolia near Cloverdale, 

 Sonoma Co., August 3. 1916, and three males and eight fe- 

 males taken by Mr. Giffard by the road a little north of 

 Hoberg's Resort, Lake Co., August 2, 1916. I also took one 

 example of this species in the Garden of the Gods at Manitou, 

 Colo., July 19, 1900. This species may be distinguished from 

 its allies by the shorter pronotum finely irrorated membrane 

 and the coarse dotting of the elytra. 



Holotype (No. 352) and Allotype (No. 353) in collection 

 of the California Academy of Sciences. 



Paratypes in collection of the California Academy of 

 Sciences, and in those of Mr. Giffard and of the author. 



160. Psollns seriatus (Rent.) Niles Canyon, July 14, 1916. 



161. Psallus soror, new species 



_ Closely allied to junipcri Heid. but larger and more strongly dotted 

 with sanguineous, nervures of the membrane and the hind tibiai also dot- 

 ted. Length to tip of the membrane 3>^-4 mm. 



Head longer than in junipcri. Vertex broad in the female, in the male 

 narrower than the large prominent eyes. Pronotum normal, the sides very 

 slightly concavely arcuated ; callosities obscure. Elytra long and parallel 

 in the male, shorter and a little arcuated in the female. Rostrum^ reaching 

 nearly or quite to the middle of the venter. Body above clothed with 

 deciduous white hairs, which are longer on the vertex and pronotum. 



Color testaceous or yellowish white, irregularly irrorate with sanguine- 

 ous above and on the sides of the pectus and venter, the cuneus more 

 deeply colored in the male; corium with a cluster of black scale-like de- 

 ciduous hairs at the apex of the clavus and two similar tufts on the hind 

 margin. Membrane evenly but lightly enfumed, the nervures pale, varied 

 with sanguineous. Antennae soiled whitish, the first segment slightly 

 marked with sanguineous at base and apex. Legs pale, the coxae tinged 

 with greenish ; femora toward their apex and the tibiae dotted with san- 

 guineous. 



Described from one pair taken by Mr. Giffard near Stock- 

 ton, May 30, 1917. This insect has much the aspect of Par- 

 thenicus psalliodes but the absence of free arolise will at once 



