63 
passing the tip of the abdomen; legs with short stiff hairs on them; 
tail short. Head, prothorax and thoracic lobes brown; eyes red; ocelli 
distinct; abdomen marked with broken dark bands; honey-tubes black; 
tail yellow; legs yellow except the tips of the femora and tibiae which 
are dusky. 
Length of body .07 inch; to tip of wings .15 inch. 
Siphonophora? salcicola. Thos. Aphis found on the Willow. 
Found on the Willow at Peoria, Illinois, in the latter part of June, 
by Miss Emma Smith. 
«/ 
I have only seen specimens of this species in glycerine, and lienee 
am unable to give a full description, or even to determine positively in 
reference to its generic characters. 
Winged individual .—Antenme seven-jointed and of the usual form in 
this genus; apparently on tubercles, but of this I could not be posi¬ 
tively certain; all the joints transversely wrinkled. Peak of medium 
length. Tail distinct, curved upward, expanded in the middle and 
about half the length of the honey-tubes. Honey-tubes long, reaching 
beyond the tip of the abdomen, cylindrical and slightly enlarged at 
the base. 
Wings of the form andneuration usual in this genus; the second fork of 
the third discoidal vein is very near the tip, the distance to the tip 
being not more than one-sixth of the distance to the junction of the 
first fork with the third vein; third vein obsolete at the immediate 
base; the subcostal vein runs very nearly parallel with the costal to the 
stigma and is transparent yellow in the specimens; stigma elongate, 
narrow and acutely pointed at the apex, yellowish. The specimens 
are so shrunken that it is impossible to ascertain the size, but it ap¬ 
pears to be rather above medium. 
The uncertainty in reference to the antennal tubercles, and the 
character of the plant on which this species is found, cause me to se¬ 
riously doubt its belonging to this genus, the species of which seldom 
attack trees, and the shrubs on which they are found appear to be con¬ 
fined mostly to the Rosacea. 
Siphonohora verbena. Thos. The Verbena Aphis. 
Found at Carbondale, Illinois, November 9th, on the leaves of Ver¬ 
bena. • 
Wingless female .—Of a bright pea-green color throughout, some 
specimens yellowish-green, with two or three deeper green longitudinal 
stripes on the abdomen. Eyes black. Antennae about as long as the 
body, pale and colorless except at the tips where they are dusky. 
Honey-tubes reaching to or slightly beyond the tip of the abdomen, 
cylindrical, pale. Tail rather short, whitish. Beak extends rather be¬ 
yond the middle legs. Body regularly ovate, somewhat elongate; me¬ 
dium size. 
It is possible this is not fully grown. 
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