1880 .] 
21 
[Packard. 
men is wide, shining black with a yellowish band in the middle, 
the posterior edge of the second and anterior two-thirds of the 
third segment being yellow. There is a yellow dot at the end 
of the pedicel, being an extension of the pale yellow under 
surface of the three basal segments. End of abdomen obliquely 
truncated. 
Length .17 inch. 
Bred from Pieris rapae. (S. H. Scudder.) 
« 
Gexus Teogo^. 
The characters of this genus may be best given by compar- 
ing it with the more typical species of Ichneumon. It may be 
at once seen to differ in the distinctly nodulose joints of the $ 
antennae and in the mesoscutum being raised into a prominent 
pointed tubercle. A broad, flattened, oblong abdomen, and much 
shorter ovipositor than in Ichneumon. The propodeum is much 
the same, but much more inflated, being very much elevated 
dorsally. The second subcostal cell (areole) is rather oblong or 
obconic than quite regularly pentagonal as in Ichneumon, while 
the pterostigma is less marked than in Ichneumon. The ovipos- 
itor is very short, stout, scarcely projecting beyond the end of 
the abdomen. 
Trogon exesorius Brulle. 
$ and 9 . Body, including head, uniformly pale, testaceous, 
pitchy brown. Tips of mandibles black, palpi concolorous with 
the rest of the body. Antennae dark brown, paler beneath, with 
a reddish hue. They are sometimes reddish brown above except 
at the tips. Wings dark, smoky, with metallic tints, giving a 
bronze hue to the wings. They vary in color, some being paler, 
and one specimen having a large pale spot on the tip of the fore- 
wing. Abdomen and legs scarcely paler than the thorax; legs 
uniformly concolorous with the abdomen ; the latter is sometimes 
faintly yellowish on the under side of the second segment, and 
there is occasionally an irregular dark shade along the under side 
of the succeeding rings. 
Length .55-.70. Expanse of wings 1.10-1.25. 
Bred from pupa of Papilio Asterias by Dr. Harris, E. Norton, 
E. T. Cresson, etc., appearing at Cambridge June 20th ; also from 
