Apterous female. Pale green throughout, except the eyes, which 
are dark. Some specimens tuberculate. 
Closely allied to S cyparissiae , Koch, but that species has red eyes. 
Found at Sioux City, Iowa, about the 1st of September, on Euphor- 
bia marginata , on the leaves and leaf-stalks. 
10. Siphonophora asclepiadis ? Fitch. Senate, No. 30, 65, 1851. 
On Asclepias cornuti. Referred with some doubt to this species. 
Dark green with dusky shadings. 
11. Siphonophora erigeronensis, new sp. 
Winged viviparous female. Grreen, the antennae, eyes and honey- 
tubes black. Antennae as long as the body or rather longer ; honey- 
tubes very long, passing the abdomen, nearly equal in length to one- 
third the body ; cylindrical, deep black. Tail distinct, rather slender, 
and curved upwards. Legs long and slender, black, except the basal 
half of each femur, which is transparent green. Head and thorax 
deeper green than the abdomen. 
Length to tip of abdomen, .08 inch; to tips of the wings, .13 inch. 
The young are pale greenish-yellow. Fully grown wingless in- 
dividuals, pale pea-green. 
Found in August, at Carhondale, Illinois, upon the flower-stalks of 
Erigeron canadensis. 
12. Siphonophora coreopsidis, new sp. 
Winged individuals. Antennae about two-thirds the length of the body; 
joints proportioned as usual. Honey-tubes long and cylindrical, length 
equal to about twice the distance to the tip of the abdomen. Head and 
thorax black ; abdomen greenish-yellow, with a grass-green spot on the 
back next the thorax, and three green spots along each side, one to a 
segment; antennae, legs and honey-tubes black; tail the color of the 
abdomen. The wings present a slightly smoky appearance; costal 
vein, stigma and discoidal veins, very dark, almost black ; subcostal 
with a yellowish tint 
Apterous female. Head pale yellow; thorax yellowish-green; ab- 
domen greenish-yellow, with a grass-green streak running from the 
thorax to the tip of the abdomen, also one running across near the 
thorax ; the hind margin of the abdomen from the base of one honey- 
tube to the other is of a reddish tint. Eyes black. Wing-cases of the 
pupa black. 
Found by Mr. Th. Pergande, in October, at St. Louis, Missouri, on 
Coreopsis aristosa> infesting the flower stalks. 
13. Siphonophora lactucae, Kalt., Mou. Pflanz. 
On the garden lettuce. 
Buckton appears to think this distinct from Aphis lactucae , Linn., or 
S. lactucae , Koch. 
