October, '08] 



JOURNAL OP ECONOMIC ENTOMOLOGY 



305 



as follows: Three, .25 mm.; four, .20 mm.; five, .19 mm.; six, .12 mm.; seven, 

 .30 mm. (Plate 6, fig. 3). The auteum^ and cornicles of seven alate females 

 from Mr. J. T. Monell taken at St. Louis, Missouri, June 10, 1908, measured as 

 follows in hundredths of millimeters: 



The antennse and cornicles of nine alate females taken at Fort Collins, Colo- 

 rado, July 10 to August 14, 1908, measured as follows: 



Oviparous Female — Plate 5, fig. 8; and Plate 6, figs. 5. 6. 



"Wingless, variable, but usually dull green in general color with a tinge of 

 rusty yellow; head dusky brown, quite dark in some individuals; eyes, distal 

 half of antennae, cornicles, cauda, knees, distal ends of tlbise, tarsi and genital 

 plates black or blackish; thoracic tubercles prominent and a row of smaller 

 cues along either lateral margin of the abdomen; cornicles straight and 

 tapering gradually towards distal ends, where there is a slight flange. Length 

 of body varying little from 1.40 mm.; antenna, .85 mm.; seventh Joint fully 

 one-third longer than joint three (Plate 6, fig. 5). Sensoria at the distal 

 ends of joints five and six only. About 10 oval sensoria on hind tibiae (Plate 

 6, fig. 6). 



Apterofls Male— Plate 5. fig. 7 ; and I'lato 6. fig. 4. 



General color brownish yellow with dusky brown head. Eyes, cornicles, 

 cauda, genital plates, tarsi, distal ends of tibiee, and more or less of distal 

 ends of antennae black or blacKish; older individuals darker llian the younger; 

 length of body, 1.10 mm.; antenna, .90 mm.; cornicles, .15 mm., cylindrical, 



