1984] 
Gordon — Pogonomvrmex badius 
265 
MacKay, W. 1981. A comparison of the nest phenologies of three species of 
Pogonomyrme.x harvester ants. Psyche 88( 1-2): 25-1 A. 
Mn Di e , M. and A. Lknoir. 1982. Social responses to variation in food supply 
and nest suitability in ants ( Tapinoma erraticuni). Anim. Behav. 30: 284 292. 
Ostir, G. F. and E. O. Wilson. 1978. Caste and ecology in the social insects. 
Princeton, NJ: Princeton University Press. 
Portir. S. D. and C. D. JoRCii NSHN. 1981. Foragers of the harvester ant, Pogo- 
nomyrme.x owyheei: a disposable caste? Behav. Ecol. Sociobiol. 9: 247-256. 
Porti r, S. D. and W. R. Tsohinki i . 1982. Population dynamics of harvester ant 
workers. In: The biology of social insects (M . D. Breed, H. E. Evans, and C. D. 
Michener, eds.), p. 67. Boulder, CO: Westview Press. 
Sokal, R. R. and F. .1. Rohi.l. 1981. Biometry. 2nd Ed. San Francisco: W. H. 
Freeman. 
Timm, N. FI. 1975. Multivariate analysis. Monterey, CA: Brooks/Cole Publishing 
Co. 
Wilson, E. O. 1953. The origin and evolution of polymorphism in ants. Qu. Rev. 
Biol. 28: 136 156. 
1968. The ergonomics of caste in the social insects. Am. Nat. 102: 41 66. 
1971. The insect societies. Cambridge, MA: Belknap Press. 
1983. Caste and division of labor in leaf-cutter ants (Hymenoptera: For- 
micidae: Alta). III. Ergonomic resiliency in foraging by A. cephalotes. Behav. 
Ecol. Sociobiol.: 14( I ): 47 54. 
