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



Contra Costa Co., June 14, 1917; Santa Cruz Co., June 7, 

 1917. The puncturation on the pronotum of this and the 

 following species is sufficient to throw them out of genus 

 Irbisia and their low cheeks and simple antennae exclude them 

 from Capsus. They possess all the essential characters of 

 Lygus and it seems best to place them here, for the present 

 at least. 



112. Lygus? solani (Heid.) With the preceding of which 

 this is probably but a dimorphic form. 



113. Lygus distinguendus var. tahoensis Knight. Sum- 

 mit, Placer Co., July, 1907, one example. 



114. Lygus nigropallidus Knight. San Francisco, April 

 18, 1917; Tune 25, 1916; July 13, 1917; Monterey Co., 

 June 10, 19^17. 



115. Lygus acru gin osus Knight. Wawona, June 17, 1916. 

 1916. 



116. Civiatlan pusilhini fUhl.) Placer Co., August 20, 

 1916. 



117. Camptoh.rochis validus Rent. Walnut Creek, Au- 

 gust 10, 1916; Wawona, August 17, 1916; Yosemite, June, 

 1916; Fallen Leaf Lake, August 21, 1916; Placer Co., 6000 

 feet, August 22, 1916; Tahoe City, August 23, 1916; Don- 

 ner Lake, August 24, 1916. Common and widely distributed 

 in California, especially through the mountains. 



118. Camptohrochis hrcvis Uhl. Donner Lake. August 

 24, 1916. A small black species with hyaline membrane and 

 fulvous legs. 



119. Camptohrochis ccrachates (Uhl.) Santa Cruz Co., 

 600 feet, June 9, 1917; Niles Canyon, May, 1916. This 

 species is larger and has more nearly parallel elytra than any 

 of our other forms. 



120. Camptohrochis fenestratus, new species. 



Form of fulgidiis; yellowish testaceous, more or less tinged with car- 

 neous, punctured and marked with black ; cuneus black with the basal 

 half conspicuously pale. Length to tip of membrane 6>4-7 mm. 



Body above polished ; legs and antennae normal, clothed with erect 

 pale hairs, which are less conspicuous than in fulvescens and are easily 

 rubbed off. Vertex to the insertion of the antennae nearly square, mod- 

 erately convex ; apex of the head obtuse as in fulvescens with the tip of 

 the cheeks but little prominent. Pronotum strongly convex and narrowed 

 before ; sides feebly sinuated and slenderly carinated ; surface with coarse 



