119 
Of the hundreds of specimens bred out during the past summer 
from eggs kept in the laborator^^ ]>y Mr. Girault the proportion of the 
sexes seems to be about eciual. Both sexes frequently emerge from 
the same bollworm egg. 
The eggs of the bollworm are attacked by a second parasite belong- 
ing to a second group, the Proctotrypoidea, Telenoimts heliothidis 
Ashm. (see fig. 22). This species was first discovered by Mally and 
described from a single specimen bred 
by him from an egg of the bollworm. 
Two females and a single male speci- 
men issued on May 30, 1904, from 
bollworm eggs kept in the laboratory 
at Paris, Tex. These eggs had been 
collected on cornsilks in a field and 
were laid by moths of the first gener- 
,. -VT • £ i.\ ' FiG.22.— Teleno7nus heliothidis— much 
ation. No more specimens of this ^^i^^^^^ (original). 
parasite were obtained during the 
year, although hundreds of eggs were under observation. It seems 
probable, therefore, that it is very rare, or possibly that it attacks 
the eggs of some other insect also. 
DESCRIPTION OF TELENOMUS HELIOTHIDIS ASHMEAD. 
Female. — Length 0.6 mm. Black, smooth, impunctured, head large, much wider 
than the thorax; eyes pubescent. Antennje dark brown, the flagellum twice as long 
as the scape, the pedicel stout and as long as the first and second funicular joints 
together, the third and fourth about equal, not longer than thick, the fifth larger, monil- 
iform, club four-jointed, the second and third joints quadrate, the last conic. Thorax 
ovoid, faintly pubescent, almost bare, mesonotum without furrows, metathorax short, 
rounded, unarmed. Wings hyaline, with a long fringe; submarginal vein joining 
the marginal at about one-fourth the length of the wing. Abdomen not longer than 
the thorax, broadly truncate behind, the first segment exceedingly short, striate, 
second segment not, or very little, longer than wide. Legs dark brown, the coxse black, 
and the tarsi whitish- 
Male. — Differs from the female as follows: Length 0.65 mm., mandibles brownish 
yellow, antennae longer, filiform, about as long as the body; flagellum three times as 
long as the scape, pedicel and first flagellar joint about equal and rounded monili- 
form, following joints a little smaller, last one-half longer and obtusely conic. Bases 
of the tibise yellowish. 
PARASITES OF THE LARVA. 
Owing to the cannibalistic habits of the bollworm, the breeding of 
parasites is a rather tedious process, since each larva must be confined 
in a separate breeding jar. This is most easily accomplished by con 
fining the desired number of larvae under a series of inverted tumblers, 
each provided with a small boll or bit of other suitable food. In prac 
tice we have found that pieces of green cowpea pods are most avail- 
