1 86 
Psyche 
[September 
vious authors, especially Bonnet, on the number of molts observed 
in spiders reared and the variation in number of instars. In addition, 
Deevey (1949) observed differences in color of eggs. Some eggs were 
pink, and out of them pink spiderlings hatched ; most of the eggs were 
creamy white in color. 
Acknowledgements : This investigation was supported in part 
by Public Health Service Research Grant AI-01944 from the 
National Institute of Allergy and Infectious Diseases, and Public 
Health Service Research Grant GM 11206 from the National Insti- 
tute of General Medical Sciences. We wish to thank Paul C. Dell 
for technical assistance and Dr. F. Carrasco Z. of the University 
of Cuzco for help in obtaining specimens from the area. 
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