Vol. VI] VAN DUZEE— SPECIES OF ORTHOTYLUS 109 



inner angle of the corium is an oblong fuscous spot. Mem- 

 brane more or less infuscated, with a pale median vitta, the 

 nervures green. Abdomen more or less greenish with the 

 stomata darker and the tip of the oviduct black. Upper sur- 

 face sparsely clothed with pale hairs. 



Described from two female examples taken from alder 

 bushes on the south slope of Mt. Tallac above Glen Alpine 

 Springs, near Lake Tahoe, Calif., July 30, 1915. I tried in 

 vain to find this species on the alders growing along Glen 

 Alpine Creek two or three hundred feet lower. It is probable 

 that the species was not then fully in season. 



Type, female, in collection of University of California. 

 Paratype, female, in Museum of California Academy of Sci- 

 ences (No. 317). 



18. Orthotylus modestus, new species. 



A little broader than dorsalis; pale gray, the dark markings 

 much reduced, those on the pronotum forming two transverse 

 vittae. Length 5mm. to tip of membrane. 



Head about as in dorsalis. Vertex narrowly flattened be- 

 fore the basal carina. Front a little more convex and less pol- 

 ished than in dorsalis. Pronotum more convex and a little 

 broader anteriorly, the sides nearly rectilinear; anterior angles 

 well rounded; surface transversely rugose; callosities scarcely 

 prominent, ill-defined. Basal lobe of the scutellum a little ex- 

 posed. Elytra rather short, the abdomen surpassing the tip 

 of the cuneus ; costal margin regularly slightly arcuated, rather 

 more so than in dorsalis. Tibial spines longer and stouter than 

 in the allied species, distinctly longer than the thickness of the 

 segment. 



Color, female, pale greenish shading to yellowish in places, 

 deeper green along the claval suture. Upper surface distinctly 

 gray-pubescent. Head pale tinged with fulvous, with a brown 

 dot on the base of the clypeus. Antennae pale, a little infus- 

 cated. Pronotum pale with a fuscous arc behind each callosity. 

 These arcs may unite and form a transverse vitta, not attain- 

 ing the margin. Hind margin with a broader fuscous vitta, 

 which omits the humeral angles. Basal area of the scutellum 

 more or less fulvous. Elytra pale or somewhat greenish; the 



