144 
PSYCHE 
[December 
Date, 1904 
IIo.st No. 
Number parasites emerging. 
May 31st. 
20. 
3. 
21. 
4. 
22. 
1. 
23. 
4. 
24. 
3. 
June 12th. 
25. 
2. 
June 27th. 
26. 
4. 
July 23rd. 
27. 
2_ 
28. 
2. 
29. 
2, 
30. 
1. 
31. 
2, 
32. 
1. 
July 30th. 
33. 
3. 
34. 
4. 
35. 
3. 
36. 
3. 
37. 
3. 
38. 
1. 
October 18th. 
39. 
3. 
40. 
3. 
Totals. 
^40. 
IIL 
, 3. 
It is thus seen that the number of adults issuing from a single host is not constant, 
but varies from one to five, averaging from two to three. The number also doubtless 
varies according to the species of host. 
6. Observations on a smgle female, bearing on the foregoing. The following 
notes are derived from observations made on a single female, supposedly virgin, 
emerging from an egg of Ileliothis between the hours of 12:30 and 2 p. M., June 
14. The observations continued until G: 35 P. M., when the insect escaped. 
a. Faulty instinct. At 3:30 p. m., the glass jar containing this female was 
lifted and the insect transferred by means of a camel’s hair brush, to a portion of a 
corn leaf on which had been deposited thirty-four (34) sterile host eggs. The leaf 
was transferred to a slide, and then placed on the stage of the microscope (§-inch 
objective, Bausch and Lomb). 
