99 



dusky patches at the ends of veins are quite conspicuous; in 

 the other specimen the wing veins are narrow and the distal 

 patches much less conspicuous. 



"87". Probably Myziis ribis Linn. Specimen in too poor condi- 

 tion for positive determination. See under vial 87, page 104. 



"88". Drcpanaphis accrifolicr Thos. Two winged specimens in 

 rather poor condition. These may be the types. See also 

 data under vial 88, page 104. 



"89". Callipterus ulniifolii Monl. These specimens and those in 

 vial 89 (see page 104) are doubtless the types of Callipterus 

 nlmicola Thos., which is a synonym of C. itlmifolii Monl. 



"90". Macrosiphum hcuchercc Thos. See under vial 90, page 105. 



"91" Poor specimens. Appear to be Aphis apocyni Koch, See 

 vial 91, page 105. 



"92", Chaitophonts qiiercicola Monl. These specimens and those 

 in vial 92 (see page 105) are doubtless the types of Thomas's 

 Callipterus quercifolii, which proves to be a synonym of 

 Chaitophorus quercicola Monl. 



"93". On this slide is one winged specimen of My::us persicce Sulz. 

 and one wingless adult and one immature specimen of Ma- 

 erosiphuui tulip cc Monl. Camera lucida drawings of the cor- 

 nicle and Cauda of the adult wingless tulipcc are given as Fig- 

 ure 21, Plate VII. See discussion under vial 93, page 105. 



"94". Macrosiphum rudbeckicc Fitch. One wingless specimen and 

 one poor winged one with antennae gone. See vial 94, page 106. 



"95" and "Raspberry Apr. 12, '78". (Two slides, a winged speci- 

 men on each slide.) Pemphigus rubi Thos. Doubtless the 

 types, which Thomas says were collected on raspberry at Car- 

 bondale. 111., April, 1878. The accompanying figures (PI. VI, 

 Figs. 1-4) are camera lucida drawings made from these speci- 

 mens. Only two hind wings give any idea of the venation : 

 the one shown in Figure 4, and another, which, although wrin- 

 kled up, shows the three veins to arise from a common point. 

 Antennal sensoria as follows: III, 6; IV, 2; V, i. Average 

 lengths of antennal segments: I, 0.0489; II, 0.07; III, 0.1793; 

 IV, 0.0815; V, 0.0815; VI, 0.1222, — total, 0.5834 mm. 



"98". Traiiia erigeronensis Thos. Probably types; all immature. 

 See vial 98, page 106. 



