22 Johfi June Davis 



This interesting species has been taken by us at Lafayette, 

 Indiana. 



yz. A. symphoricarpi Thomas. 



74. A. vernoniae Thomas. 



75. A. viburnicola Gillette {A. viburni Scopoli). 



" Aphis viburni Scop. Snowball. Ashland, Oct. 23, 1890." 

 Two slides numbered " 95 " and " 96," respectively. 



y6. A. yuccae Cowan {A. yuccicola Williams). 



" Aphis yuccicola n. sp. Type No. 97. On Yucca, Pine Ridge, 

 June 18, 1890." 



Three winged, one adult wingless and several immature on the 

 slide. 



Winged viviparous female: Antennal segment III bears 17 to 26 sen- 

 soria. Measurements of antennae as follows: 



1 n III IV V VI base VI filament Total 



0.065 0.057 0.334 0.204 0.163 0.122 0.310 1.255 mm 



0.334 0.195 0.179 0.122 0.318 mm 



0.065 0.057 0.358 0.228 0.195 0.II4 0.318 1.335 mm 



0.358 0.228 0.195 O.I 14 0.293 mm 



0.326 0.228 0.187 0.114 0.318 mm 



Vein Ml (first branch of the third discoidal) always branching nearer the 

 apex than the point where M3+4 branches. Cornicles reaching nearly or 

 quite to the tip of style, and a little more than twice the length of the 

 hind tarsus. 



Camera lucida drawings of the antenna, wing, cornicle and 

 style of the winged viviparous female on Plate V, figs. 80 to 83. 



77. Hyadaphis capreae (Fabricius) (Siphocoryne pastinaceae Linnaeus). 

 " Siphocoryne pastinaceae Linn. No. loi. War Bonnet Cr., 



6/21, '90." 



Three winged viviparous females on slide. This is H. capreae, 

 which may or may not be identical with pastinaceae. The dorsal 

 abdominal tubercle is visible in each of the three specimens. 



78. Myzus achyrantes (Monell). 



79. M. cerasi (Fabricius). 



80. Macrosiphum oenotherae (Williams) (Mysus oenotherae Williams). 



274 



