]38 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Holotype, male, No. 788, and allotype, female, No. 789, 

 Mus. Calif. Acad. Sci. 



Type locality, Bryson, Monterey Co., Calif. 



Xylocoris calif ornicus Reut., I have taken at Cayton, 

 Shasta Co., Calif., and at Bryson, Monterey Co., Calif. It 

 may be distinguished by the broad lunate and striate area 

 anterior to the ostiolar canal and whitish elytra with the 

 inner and commissural margins of the clavus, apex of the 

 embolium and the cuneus, except its inner angle, piceous. 

 X. flaccidus and discalis have the ostiolar canal long and 

 curved, with its acute apex at the basal margin of the meta- 

 pleura, and pertain to the section of the genus with sordidus 

 Reut., while umbrinus has this canal shorter and more ob- 

 tuse at apex, thus allying it with cursitans Fall. 



2. Anthocoris tristis, new species 



Allied to dentipes Champ., but larger, with the elytra, 

 except the clavus, polished; antennae, legs and base of elytra, 

 deep piceous. Length A l / 2 mm. 



Head shorter, scarcely longer than median line of pronotum ; surface 

 minutely shagreened. Antennae short, stout, scarcely longer than basal width 

 of pronotum ; seg, I reaching apex of head ; II as long as width across the 

 eyes; III and IV equal, together distinctly longer than II. Pronotum broad, 

 strongly impressed across the disk; sides feebly sinuated, slenderly carinate 

 as far as the collum, the latter broad; posterior lobe minutely rugose, the 

 region of the callosities nearly smooth; scutellum smooth. Elytra rather 

 narrow, polished, the clavus only opaque; membrane much exceeding the 

 abdomen ; outer vein indistinct, the others obsolete or nearly so. Rostrum 

 hardly attaining the anterior coxae; seg. I scarcely longer than broad; III 

 but little longer than the width of the collum. Ostiolar canal short, 

 broad, its hind margin broadly curved, the anterior slightly curved anteriorly. 

 Beneath polished, the presternum opaque and strongly rugose; ventral seg- 

 ments punctate becoming smooth along the hind margins; anterior femora 

 with a small tubercle at apical third. 



Color, deep black, the antennae, rostrum, legs and elytra to apex of corium 

 more or less piceous with the embolium paler; upper surface sparsely clothed 

 with soft white pubescence; basal third of membrane obscurely whitish. 



Described from one female taken in Yosemite Valley, 

 California, in June, 1916, by Mr. Walter M. Giffard. The 

 larger size, polished corium and embolium and the shorter 

 third segment of the antennae will most readily distinguish 

 this form from dentipes Champ. 



Holotype, female, No. 790, Mus. Calif. Acad. Sci. 



Type locality, Yosemite Valley, Calif. 



