80 
Some respects is also allied to the latter genus is clearly indicated by 
the antennae of some of its species. Buckton places it between Me- 
goura and Siphocoryne , Aphis following the latter, which is, undoubt- 
ly a better arrangement. 
It may be characterized as follows: 
Beak of medium length. Antennae usually as short or shorter than 
the body, but occasionally exceeding it in length; third joint longer 
than the fourth; seventh setaceous and sometimes longer than the 
third. Wings, and size and form of the body, as in Aphis. Honey- 
tubes usually of medium length, seldom extending beyond the tip of 
the abdomen, dilated in the middle or near the end, and sometimes 
slightly curved. Tail present and distinct but small. 
Species with long antennae generally have rather long and robust 
honey-tubes, and are distinguished from Drepanosiplium chiefly by the 
size of the tail. 
/ 
Rhopalosiphum dianthi. Schr. 
Found on carnation pink and German ivy by Miss Middleton, at 
Carbondale, Illinois, in March. Wingless only seen and these in bal¬ 
sam, but the characters together with the plants on which they were 
found are sufficient to determine the species. The characters so far as 
the color and the wings are concerned are taken from Koch. 
Winged female. —Antennae reaching to the tips of the honey-tubes, 
dark; head and thorax black; abdomen dark olive green, with dark 
transverse bands; honey-tubes extending slightly beyond the tip of the 
abdomen, slightly enlarged in the middle, dark or brown; tail small 
and concolorous with the abdomen. 
Wingless female. —Antennae as seen in the specimens examined, 
about as long as the body; the tubercle is distinctly enlarged and gib¬ 
bous internally; third joint longest, this and remainder as usual in 
this genus. Body broadly ovate, the abdomen with the sides much 
rounded. Honey-tubes enlarged in the middle, same color as the 
abdomen; tail ralher short and conical. Color as given by Koch, 
pale yellowish green with a darker green stripe in the middle and 
one on each side. Antenna? and legs pale. 
Rhopalosiphum tulips, n. sp. 
Winged individuals. —Antennae longer than the body, reaching to 
or beyond the tips of the honey-tubes when extended; the tubercle on 
which they stand, with a slight internal enlargement; the first joint 
very thick, with a slight protuberance on the inner side; third and 
seventh joints long; usual type. Honey-tubes rather long, extending 
beyond the tip of the abdomen and nearly or quite to the tip of the 
tail; distinctly enlarged in the middle portion, smaller at the base and 
at the tips, presenting the usual form in this genus. Tail about half 
the length of the honey-tubes, sub-conical and curved upwards. Wings 
