244 ENTOMOLOGICAL NEWS [June. 'll 



Wingless viviparous female. — Head and thorax usually yellovi? or 

 yellowish brown, the fore part of the head being pale dusky. Abdo- 

 men, after removal of the white flocculence, usually pale green, but 

 sometimes pale yellow or yellowish green, and usually darkest on the 

 sides. Eyes blackish. Beak not reaching, or barely reaching, the coxse 

 of second pair of legs. Antennae very pale greenish or yellowish, ex- 

 cepting distal ends of IV and all of V and VI, which are dusky to 

 blackish; rather short, being a third or less the length of the body; 

 segments vary in length as will be noticed from the accompanying fig- 

 ures ; usually 6-segmented, but often only s ; as a rule III and VI sub- 

 equal, II and IV sub-equal, V longer than IV but shorter than VI; 

 sensoria only at distal ends of V and VI. (Fig. i drawn from speci- 

 mens collected in Chicago, October 22, 1908, show two antennae from 

 the same specimen, one being 5- and the other 6-segmented; figs. 2 and 

 3 were drawn from different individuals, but both from same colony 

 collected in Chicago September 15, 1908; fig. 4 drawn from specimen 

 collected by Mr. W. P. Flint at Normal, April 9, 1908). Legs pale 

 greenish excepting distal half of tarsi, which are black. Abdomen 

 with six longitudinal rows of wax glands, three on each side of the 

 median line, one of these being on the lateral edge. Cornicles very 

 slightly elevated above the surface, but quite distinct, being represent- 

 ed by dusky to blackish rings. Style sub-obsolete. 



Wingless male. — A single specimen was collected at Chicago, Sep- 

 tember 15, 1908, and no color notes were taken. The size and general 

 appearance of the body much resembles that of the winged male de- 

 scribed below. Antennae barely reaching to cornicles; the last four 

 segments sub-equal, V being invariably shorter than II or IV, and VI 

 invariably longer than III or IV; segment III with 3-4 circular sen- 

 soria in a row, IV with 3-5, V with 2-4 in addition to the usual one 

 at distal end, and VI with 2-4 and the usual one at end of basal por- 

 tion. (PI. VII, fig. 5). 



Winged male. — Head and thoracic shield dusky brownish to black- 

 ish, neck yellowish, abdomen pale greenish to yellowish. One speci- 

 men had indistinct irregular dusky markings. (PI. VII, fig. 11). In 

 colonies beneath a heavy flocculence, and individuals covered with a 

 fine pulverulence. Beak reaching a little beyond coxae of first pair of 

 legs but not to coxae of second pair. Eyes dark red to black. An- 

 tennae dusky, paler at base; reaching about to cornicles; last four 

 segments about sub-equal ; III with 3-8 circular sensoria ; IV with 

 4-7, V with 6-1 1, and VT with 5-10. (PI. VII, fig. 6). Legs pale ex- 

 cepting joints and the tarsi, which are dusky. Wing veins blackish. 

 Venation variable, as follows : Of the five specimens before me, two 

 individuals have the discoidal of both wings twice branched (PL VII, 



