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



males taken by Mr. Giffard at Tahoe City, Placer Co., Au- 

 gust 23, 1916. This may prove to be a maculated variety 

 of aureoviridis but that seems very unlikely. Enipoasca tri- 

 fasciata is a little smaller with a more prominent head. It 

 is yellow rather than green, and has three well-defined trans- 

 verse fuscous bands, the first of which, covering the poste- 

 rior portion of the pronotum, is not indicated in this new 

 species, and the apical is shorter, beginning very little before 

 the transverse nervures and has all the contained nervures 

 concolorous, whereas in transversa they are pale within this 

 posterior band. 



Holotype (No. 370), female, from Tahoe, in collection af 

 the California Academy of Sciences. 



Allotype, male, from Leona Heights, in collection of the 

 author. 



Paratypes in both collections and in that of Mr. Giffard. 



304. Empoasca unicolor Gill. Hamilton Station, Tuol- 

 umne Co., June, 1916. 



305. Empoasca ohtiisa Walsh. San Francisco, July 18, 

 1916; Los Altos, July 26, 1916; Portola Valley, San Mateo 

 Co., May 4, 1917; Niles Canyon, May, 1916, July 24, 1916; 

 Placer Co., August 22, 1916; Summit, Placer Co., August 

 24, 1916. 



306. Empoasca unica (Prov.) Laurel Dell, Lake Co., Au- 

 gust 2, 1916; Tahoe City, August 23, 1916. 



307. Empoasca snowi Gill. Los Altos, July 26, 1916; 

 Wawona, June 17, 1916. 



308. Empoasca aspersa G. & B. Monterey Co., June 10, 

 1917. 



309. Empoasca alboscripta Van D. San Francisco, July 

 18, 1916; Los Altos, July 26, 1916; Portola Valley, San 

 Mateo Co., May 4, 1917; Muir Woods, July 15,' 1917; 

 Niles Canyon, May, 1916; July 14, 1916; Redwood Can- 

 yon, August 6, 1916; San Joaquin Co., May 25, 1916; 

 Placer Co., August 22. 1916. 



310. Empoasca ruficeps, new species 



Small ; yellowish green, mottled with brown ; pronotum and scutellum 

 marked with sanguineous-brown, each with three white points. Length 

 31/2 mm. 



