OSBORN AND BALL — THE GENUS PEDIOPSIS. 121 



with a large black spot in both sexes. Easily separated from the 

 other green species by the larger size and much more pointed vertex 

 as well as by the large spot on the propleura. 



Pediopsis occidentalis V. D. 



Pediopsis occidentalis Van Duzee. Psyche, \ ., p. 238, 1889. 



Smaller, vertex obtuse, dull greenish yellow in the female, distinctly 

 brownish in the male. Length, 9 5 mm.; d^, 4 mm. 



Vertex slightly rounder than in viridis, pronotal rugae distinct cres^ 

 centiform. Elytra broader, apical cells shorter, general color darker, 

 especially in males, propleura with a black spot in both sexes, much 

 larger than in the male viridis. 



Habitat, California, Nevada. 



Van Duzee's "two small brown males from Nevada," mentioned 

 under viridis, evidently belong here, and as placed, leaves quite a dif- 

 ference in depth of color, which, with the shorter vertex and larger 

 spots on the propleura, makes this quite distinct from either viridis or 

 virescens in the material at hand. 



Pediopsis viridis Fitch. 



Pediopsis viridis Fitch. Homop. New York State; Cab., p. 59, 1851 ; 

 id. reprint in Lintner's 9th Rept., p. 399, 1893 ; Uhler, Bull. U. S. Geol. and 

 Geog. Surv., III., p. 467, 1877; ^^-n Duzee, Can. Ent., XXI., p. 9, 1889; 

 Ent. Am., V., p. 170, 1889; Prov. Pet., Faune, Ent. Can., Ill, p. 294, 1890; 

 Van Duzee, Psyche, V., pp. 238, 388, 1890 (mention) ; Harrington, Ottawa, 

 Nat., VI., p. 31, 1892 (mention) ; Osborn, Proc, Iowa Acad. Sci., I., pt. 2, p. 

 126, 1892 (mention). 



Vertex slightly obtusely angled; color, green, males slightly washed 

 with fuscous, the elytra brownish towards the apex. Length, ? 5.25 

 mm.; J^, 4.85 mm.; width, 1.40 mm. 



Female green, the elytra sub-hyaline greenish, slightly brown at the 

 apex, male deep green, slightly washed with fuscous, the elytra dis- 

 tinctly brownish except on base and costa. Propleura with a small 

 spot in males only, rarely wanting. 



Habitat, Canada, New York, Iowa, Maryland, Kansas, Colorado. 



This is the most common species on willow in Iowa as well as in 

 the Eastern States ; from erythrocephala it may be readily separated by 

 the absence of the black spots on the female propleura and the fuscous 



