2OO 
EYE SPY 
teen dark red, egg - shaped chrysalides of the es- 
caped larvae. Two weeks later, upon opening the 
box, a swarm of flies flew out. I was enabled to 
keep two of them. They were almost exactly 
like the common house-fly to the ordinary ob- 
server, but belonged to a distinct genus. At this 
writing, in the absence of my specimen, I cannot 
give the name by which they are known in learned 
circles, but I think I am safe in saying that they 
probably belong to the group called Tachina, a 
family of parasitic flies which spend their early 
lives in a similar questionable manner, to the 
probable discomfort of potato - bugs, caterpillars, 
and other accommodating insect hosts. 
