A"ol. Xxii] ENTO^[OLOGICAL NEWS 245 



fig. 7) ; another specimen has one wing with discoidal twice branched 

 and in the other wing it is only once branched (PI. VII, fig. 8) ; one 

 specimen has a once-branched discoidal in one wing and a partial sec- 

 ond branching in the other wing; the last individual has both discoi- 

 dals only once-branched. Summing up, there are five twice-branched 

 discoidals, one with partial second branch, and four only once-branch- 

 ed. Mr. J. T. Monell very kindly loaned me a slide bearing two 

 winged males of this species. Two of the wings have discoidal twice 

 branched, another no branching (PI. VII, fig. 9), and the fourth wing 

 is missing. The specimens from Monell's collection were collected by 

 Mr. Theo. Pergande on Quercus alba and Q. printis, Washington, D. 

 C, October 24, 1882. Cornicles very slightly elevated above surface 

 abdomen, dusky, with blackish line indicating the opening. Described 

 from five individuals collected at Chicago, October 22, 1908, and at 

 Danville, III, October 8, 1910. 



Measurements. — Average: Length of body, i.oi mm.; width, 0.43 

 mm.; length of wings, 1.42 mm.; width, 0.54 mm.; antennae III, 0.20; 

 IV, 0.20; V, 0.18; VI, 0.19; average total, including segments I and II 

 0.88 mm. 



Wingless oviparous female. — Entire body covered with a rather 

 heavy pulverulence, beneath which the body color is greenish to pale 

 brownish, more often the latter, especially late in the season. Head 

 dusky. Prothoracic segment with two dusky spots near the anterior 

 and two near the posterior margin. Body with two longitudinal rows 

 of dots close together on each side of the dorsal median line and a 

 single row on each side at the margin. Eyes dark red. Beak not 

 quite, or barely, reaching the coxse of the second pair of legs. An- 

 teimae dusky, more uniform than in the viviparous female, and are, as 

 a rule, of a type shown in fig. 4. Legs short and dusky, hind tibiae 

 with many circular sensoria on the basal two-thirds. (PI. VII, fig. 12), 

 Cornicles indicated by dark circular rings. In size and other respects 

 it has the appearance of the viviparous female. 



Explanation of Pl-ate VII. 



Phyllaphis {?) qtierci Fitch. — Figs, i, 2, 3 and 4 antennae of wing- 

 less viviparous female ; 5, antenna of wingless male ; 6, antenna of 

 winged male; 7, 8 and 9, fore wing of winged male; 10, hind wing of 

 winged male; 11, winged male; 12, hind tibia of wingless oviparous 

 female. 



Camera lucida drawings, figs. i. 2, 3. 4. 5- 6, 7, 8 and 12, with a one- 

 inch eyepiece and two-thirds objective; 9, 10 and 11, with a two-inch 

 eyepiece and two-thirds objective. In other words, 9, 10 and 11 are 

 drawn to three-fifths the size of the others. 



