40 Bulletin Wisconsin Natural History Society. [Vol. 10, Nos. 1 & 2. 
All of the examples of this species which I have 
obtained from the cocoons of the Tobacco-worm have 
been females. The last of August, 1862, I received 
from Dr. Allen, of Saratoga Springs, a larva of the 
Sphinx kalmice, to which thirty-six cocoon were adher- 
ing. *************** 
Of the flies obtained from the Lilac-worm, four 
were males, whereby it appears that this sex differs 
from the females above described, in the following par¬ 
ticulars ; 1st, their color is lighter and more bright, 
being brilliant metallic green, when dried becoming 
blue green; 2nd, their antenae are tarnished yellow, 
joints being cylindric and a third longer than thick, 
longer and not at all thickened toward the tips, their 
joints being cylindric and a third longer than thick, 
with the last joint egg-shaped, and but little longer 
than its predecessor; 3rd, the abdomen is flattened oval 
and rounding at its tip, with a large translucent pale 
yellow spot near the base; 4th, the legs are paler and 
pure yellow without any mixture of orange or tawny.” 
(Fitch, 1865, pages 225-227). 
Fitch gave a much better description of the species than did 
Walsh, but he was misled in regard to some of the structures; by 
comparing the two descriptions one could hardly say that they 
disagree in essentials; rather, the second supplements the first. 
Fitch reared the species from the cocoons of Apanteles congre- 
gatus (Walsh) when parasitic on Phelegethontius and also from 
some microgaster cocoons on the larva of Sphinx kalmice Smith 
and Abbot. 
Some years later, Riley (1881) 5 mentioned the rearing of this 
hyperparasite by Walsh from Apanteles militaris (Walsh) and 
called attention to the fact that Walsh’s viridescens and Fitch’s 
tabacum were the same 6 , referring to the species as Glyphe viri¬ 
descens Walsh and also recording it as a parasite of Apanteles con- 
gregatus (Say) when parasitic on Heliophila unipuncta Haworth. 
During the same year Thomas (1881) listed the species among 
the parasites of Heliophila unipuncta Haworth as being a second- 
5) And see Packard (1861). 
6) But later (Riley, 1883) he referred it doubtfully to Tridymus Ratzeburg. 
