ig 
that the caterpillar introduces into itself the eggs of the parasite with 
the food, and that the same could well be the case with many other 
caterpillars infested with Tachinids, yet I can not suppress some doubt 
regarding this mode of involuntary introduction of the parasite. Pro- 
fessor Riley has also expressed his doubt on this point (INSECT LIFE, 
1888, vol. I, p. 62.) The peculiar provisions in female Tachinids for the 
deposition of the eggs, their hasty behavior while in search of the hosts, 
and further, the fact that many eggs of the parasites must be crushed 
by the caterpillar in feeding; finally, the observation (cf. Rob. Desv. 
Ann. Soe. Ent., France, 1850, p. 162) that in Tachinids oviposition on 
the host actually takes place—all this renders the unusual introduction 
said to take place in the Uji hardly probable. 
FURTHER NOTES ON PANCHLORA. 
By C7 Vi. RILEY. 
Since publishing the article on the viviparous cockroach in the last 
number of INSECT LIFE, I have ascertained some further interesting 
facts relative to the viviparity of the insect. In conversation with Mr. 
Gustave Guttenberg, teacher of biology in the Pittsburg High School, 
at the recent meeting of the A. A. A.S., and also by a letter received 
from him August 27, transmitting specimens, he informed me that he 
had found a green cockroach which, while being examined by one of 
his scholars, had given birth to about thirty living young, besides some 
individuals still in their “ pupa cases” [egg sacs] and a cluster of about 
twelve “ pupzx” [eggs] arranged side by side. The adult insect was said 
to have been yellowish-green, while the young were about the same color. 
These were active and began to scatter at once. The specimens in 
question proved, as I suspected, to be an adult female with young, 
of Panchlora viridis. The eggs were arranged in a double row side by 
side, with no visible enveloping membrane. A number of them had 
hatched, and others still contained embryonic larve. The young larvee 
that were born viviparously were much darker in general color than 
the adult, but were lighter colored than the specimens previously ob- 
tained by me. The arrangement of the eggs was not perfect, and indi- 
cated that the cluster, as it originally existed, had been broken up, and 
also that a number of the eggs were separated, so that the exact shape 
of the mass could not be determined. 
Very fortunately, however, another specimen of the vaikees was re- 
cently forwarded to me by Dr. Carl F. Gissler, of Brooklyn, N. Y., 
with the report that he had captured it on his window sill, and that it 
was alive. The insect in question, which was a large pregnant female, 
died in transit. Dissection, however, resulted in obtaining a perfect 
egg-cluster. This was arranged in a semicircle, and consisted of a 
