304 JOURNAL OP ECONOMIC ENTOMOLOGY [Vol. 1 



The young lice of the second generation, before their first molt, are a very- 

 pale yellowish green with light to dark red eyes and with legs and antennae 

 pale dusky. Antenna? with third joint longest, nearly equaling joints four and 

 five together, whole number of joints five, sensoria at distal ends of joints 

 three and four. The head is large and broad, the thoracic tubercles are well de- 

 veloped and about five similar tubercles occur along either lateral margin of 

 the abdomen; the cornicles are very stout, being about as broad as long and 

 about parallel sided. Length of body, .60 to .65 mm.; antenna .35 to .40 mm. 



Adult Apterous Viviparous Female — Plate 5, fig. 3; and Plate 6. fig. 2. 



Described from same lot as preceding young. 



General color light green or yellowish green with head, or head and thorax, 

 distinctly yellowish, the head in some specimens somewhat dusky; cor- 

 nicles, eyes, tarsi, genital plates, cauda, knees, distal ends of tibiae and 

 more or less of the distal ends of joints four, five and six of the antennae 

 dusky brown to deep black. Thoracic tubercles distinct, about four to six 

 similar but smaller lateral abdominal tubercles upon either side; cornicles 

 sti'aight and slightly tapering to the outer ends, where there is a moderate 

 flange; cauda upturned, tail-like; vertex gentl,y rounded, antennal tubercles 

 very slight; body pyriform in general shape. Length varying from 1.60 to 2 

 mm.; length of antenna, 1.20 mm., joint seven usually a little the longest, 

 joints four and five sub-eriual (Plate 6, fig. 2) ; length of cornicles somewhat 

 variable but differing little from .40 mm.; cauda, .19 mm. The orange color 

 at base of cornicles as described by Sanderson in Thirteenth Annual Report, 

 Del. Experiment Station, 1901, I have never seen at any time of the year in 

 this species. 



Pupa of Viviparous Female — Plate 5, fig. 6. 



In third generation, bred from stem-mothers described above. 



Color of abdomen green, more or less tinged with yellow; thorax, above and 

 below, yellowish brown, to pale carneous, the color being deepest on prothorax 

 and middle portion of mesothorax; head of same color with more or less dusky 

 brown that is separated into two lateral patches more or less distinctly by a 

 median lighter line; distal ends of antennae, eyes, cornicles, wing pads, tarsi, 

 distal ends of tibiae, most of the femora, and beak, and genital plates black or 

 blackish; cauda green, more or less infuscated about the margins; thoracic 

 and abdominal tubercles as in Apterous Viviparous female. Length of body 

 about l.SO to 2 mm.; antenna, 1 to 1.10 nun.; cornicles, .32 mm. 



Winged Viviparous Female— Plate 5, fig. 6; and Plate 6, fig. 3. 



Third generation as in case of pupa described above. 



Color of abdomen deep green, without black markings above,' head, thorax 

 above and below, cornicles, cauda, genital plates, tarsi and distal ends of 

 tibiae and femora, black or blackish; costal vein and stigma dusky; venation 

 normal; eyes a very dark red, usually appearing black; lateral tubercles pres- 

 ent on prothorax and most of the abdominal segments; middle ocellus upon 

 vertex rather prominent, antennae upon slight tubercles, third joint with about 

 6 to 9 rather large flat circular sensoria in a single row, cornicles very grad- 

 ually tapering to the distal ends, where there is a moderate flange. Length 

 of body, 1.50 to 1.60 mm.; antenna, 1.15 to 1.25 mm. Joints of antenna about 



^In some of the specimens there are, upon either lateral margin of the abdomen, 

 three or four darker green or dusky spots, but not the good black spots that occur in 

 many species. 



