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I. Pediopsis viridis Fitch, Homop. of the N. Y. State Cabinet, p. 59, (1851). 

 Walker, List of Homop., IV, p. 1162, (1852), {^Bythoscopus^. Uhler, Bull. 

 U. S. Geol. and Geog. Surv., Ill, p. 467, (1876). Van Duzee, Can. Ent., 

 XXI, p. 9, (1889). 



Female. — Uniform pea-green or yellowish-green, generally fading to a yellowish 

 color in the dried specimens. Legs and beneath paler. Face finely punctured below, 

 the rugae above indistinct, frontal sutures conspicuous ; clypeus long, extending for 

 half its length beyond the lorse ; eyes brown. Rostrum yellowish green, tip black. 

 Pronotal rugae feeble. Elytra greenish hyaline, rarely very faintly obscured toward 

 the apex ; nerves green, pale toward the tip. Wings very delicate whitish hyaline. 

 Claws and an annulus of small teeth at the tip of the posterior tibia black. 



Male. — Obscure green or brown ; face and scutellum paler; elytra brown, at 

 least on the apex and inner margin. Facial punctures and frontal rugre rather more 

 distinct than in the female. Scutellum finely and obscurely punctured. Propleura 

 with a black spot. Beneath pale yellowish brown or honey-yellow with the venter 

 fulvous, in brown examples ; or yellowish green with the venter pale, in green 

 examples. Tarsi black or more often only tipped with black. Elytra varying from 

 pale green with a smoky cloud on the apex and inner margin to imiform deep smoky 

 brown. Wings faintly embrowned toward their apex or along their entire outer 

 margin ; nervules brown, conspicuous. Tergum greenish or lerruginous, more or 

 less invaded with black, or the disk entirely black with the segments narrowly marg- 

 ined with pale. 



Length, (5', 4^—5 mm.; (^, 5 — 6 mm. 



The individual variation here encountered is considerable and of a 

 very puzzling nature, and I do not feel fully satisfied that I have rightly 

 defined the species here. Among 86 examples (47 (^(^ and 39 9 9)' 

 now before me, 43 males agree in being of some shade of green or brown 

 with the elytra more or less smoky, and with a black spot on the pro- 

 pleura ; of the females 37 agree in being uf a uniform green of some 

 shade with at most but a faint trace of brown at the apex of the elytra, 

 and without a black spot on the propleura. I feci confident that die 

 variation from green to brown in the males, and from vcllowish to deep 

 green in the females is not always or entirely dependant on the maturity 

 of the individual. Of the six anomalous examples before me three males 

 correspond very closely with the females in color, while two females 

 mimic the males ; this induced me formerly to consider them distinct 

 species, but as the brown males and green females occur together in great 

 numbers on the same willow bush both as young and adult, and with 

 the entire absence of the similarly colored examples of the opposite sex, 

 it seems necessary to unite them although I have not yet found them 

 pairing. 



This is by far our most abundant species of Pediopsis in Western 

 New York. It lives on Willow and reaches maturity about the 20th of 

 June, continuing abundant until August. I have also taken it at Mus- 

 koka Lake. Mr. Uhler records it from Colorado and has sent me an 



