904 FAMILY XXIX. — MIRID^E. 



verse marks; scutellum usually pale or dull yellow with two wide brown 

 abbreviated stripes; apical third of corium and embolium more or less 

 darkened with fuscous-brown, narrow line along - base of cubitus pale; 

 membrane translucent fuscous, paler near tips of cuneus, veins dark 

 brown; legs black or dark brown, coxae, trochanters and basal third of 

 femora in part dull yellow, tibia? with two vague paler rings; ventrals, in 

 dark specimens, shining black, in pale ones, dull yellow with spiracles 

 and median line blackish. Antenna? dark brown to black, joint 1 four- 

 fifths as long as width of vertex; 2 three and one-half times longer than 

 1, feebly thickened from base to apex; 3 and 4 united two-thirds the 

 length of 2. Pronotum shorter, with sides less convergent than in 

 laricicola, hind angles more broadly rounded; disk, as well as that of 

 elytra, rather finely evenly, not densely punctate. Tarsal claws and 

 arolia as in pi. X, fig. 28. Length, 6 — 6.4 mm. 



Ithaca, N. Y., July 13 (Gerhard). Wyandanch, L. I., N. Y., 

 July 3 (Davis). Ranges from Ontario and New England west 

 to Minnesota and south to Washington, D. C. Knight found 

 the fifth stage nymphs in numbers on June 9 near Ithaca, N. 

 Y., on white pine. They were living among and were pre- 

 daceous upon the pine bark aphid, Cheilites pinicorticis (Fitch) 

 and were covered with a coat of white wax-like material similar 

 to that of the aphids. 



1003 ( — ). Der^eocoris kennicotti Knight, 1921, 166. 



Dull grayish-yellow; head with inner margin of eyes, some trans- 

 verse bars each side of front, base of tylus, lora? and cheeks, black; calli 

 and area in front of them shining black; scutellum black, basal angles 

 and tip pale; elytra grayish-yellow, translucent; narrow edge and tip 

 of embolium, apex of clavus, spots at base, near middle and on apex of 

 corium, fuscous to blackish; basal half of cuneus pale with black punc- 

 tures, apical half brownish-black; membrane fuscous, cells and a spot 

 near tip of cuneus paler, veins darker; legs blackish, hind femora and 

 tibia? as in key; ventrals dark brownish-black, thickly pubescent. Joint 

 1 of antenna? dull yellow, darker toward base, one-tenth shorter than 

 width of vertex ; 2 testaceous, blackish toward apex, three and one-half 

 times as long as 1 ; 3 and 4 blackish-brown, 3 two-fifths as long as 2, 4 

 one-tenth shorter than 3. Beak reaching between middle coxa?. Length, 

 5.7—6.7 mm. 



Recorded only from Mt. Katahdin, Maine, and Great Slave 

 Lake, Canada. 



1004 (1068). Der^eocoris nigritulus Knight, 1921, 170. 



Color a nearly uniform dark reddish-brown, rather thickly clothed 

 with long, suberect brown hairs; head often with tylus and basal margin 

 of vertex paler; scutellum, embolium and cuneus concolorous with corium; 

 membrane pale brownish-hyaline, its veins brown; legs and under sur- 

 face brown, trochanters, tips of coxa? and osteolar duct paler; tibia? with 



