Packard.] 
30 
[May 5, 
Pteromalus puparum Linn. 
$ . Head a little more than one-third as long as broad. Eyes of 
the usual size. Head and thorax rather coarsely punctured ; of a 
uniform bright pale beautiful green, with slight metallic reflec- 
tions. Antennae rather long and slender, ending in a slightly 
enlarged oval and pointed knob. They are honey yellow, duller 
below the elbow, the joints beyond the third being ringed nar- 
rowly with brown at the articulations. Mandibles and palpi 
honey yellow\ Disc of propodeum broad, full, convex, with reg- 
ularly rounded sides and no signs of a keel in the middle. Abdo- 
men elongate oval, narrow, being three times as long as broad, in 
dried specimens with a hollow along the middle ; smooth and very 
bright and shining, throwing off brilliant metallic hues, and with 
scattered short pale hairs about the tip. Wings as usual in this 
section of the genus, the tip of the subcostal vein ending in a dis- 
tinct knob, and forming two sides of a nearly equilateral triangle. 
Legs uniformly pale honey yellow, last tarsal joint usually dark. 
Coxae concolorous with the body. 
Length .10 inch. 
? . Head rather short and broad, being four times as broad as 
long. Eyes slightly larger than in a Pteromalus bred from Grapta 
interrogationis. Head and thorax of a uniform peculiar dark olive 
green, with slight metallic reflection but no decided purplish 
tinge. Mandibles and other appendages of the mouth pale red- 
dish, varying, some being darker than others. Antennae : second 
and third joints honey yellow, concolorous with lighter part of 
legs, tip of second joint darker, first joint and those beyond dark 
brown. Head and thorax finely shagreened as usual, being rather 
coarsely punctured on the mesothorax. The row of teeth or gran- 
ulations deeply sunken and fine and inconspicuous. (These rugos- 
ities are on each side of the metascutum). Disc of propodeum 
regularly convex, without any traces of a median keel. Abdo- 
men regularly oval, flattened, of the same length as the thorax 
exclusive of the propodeum, smooth, shining, with a metallic lus- 
ter, especially at the base where it is decidedly copj)ery in its 
hues. Ovipositor projecting a little beyond the tip; it is concolor- 
ous with the abdomen. Wings of fore pair broad, rounded at tip ; 
venation as usual. Legs with the coxae concolorous with thorax; 
