1981] 
Mac Kay — Nest Phenologies of Pogonomyrmex 
69 
Nielsen, M. G. 
1972. Production of workers in an ant nest. Ekologia Polska 20 : 65-71. 
Nielsen, M. G. 
Number and biomass of worker ants in a sandy area in Denmark. 
Natura Jutlandica 17 : 93-95. 
Nielsen, M. G. and T. F. Jensen. 
1975. Ecological studies on Lasius alienus ( Forst) ( Hymenoptera: Formicidae). 
Entomologiske Meddelelser 43: 5-16. (In Danish). 
O’Dowd, D. J. and M. E. Hay. 
1980. Mutualism between harvester ants and a desert ephemeral: seed escape 
from rodents. Ecology 61 : 531-540. 
Odum, E. P. and A. J. Pontin. 
1961. Population density of the underground ant, Lasius flavus as determined 
by tagging with P 22 . Ecology 42: 186-188. 
Peck, S. B. 
1976. The myrmecophilous beetle genus Echinoeoleus in the southwestern 
United States (Leiodidae, Catopinae). Psyche 83: 51-62. 
Petal, J. 
1967. Productivity and the consumption of food in the Myrmica laevinodis 
Nyl. population. Proceedings of the International Biological Program 
on secondary productivity of terrestrial ecosystems. K.. Petrusewicz (ed). 
pp. 841 857. 
Protomastro, J. J. 
1973. Relacion entre el comportamiento de crianza y un ritmo diario de 
preferencia termica en la hormiga Camponotus mus Roger. Physis, 
Seccion C. 32: 123-128. 
Reichmann, O. J. 
1979. Desert granivore foraging and its impact on seed densities and distribu- 
tions. Ecology 60 : 1085 1092. 
Rode, A. A. 
1955. The moisture properties of soils and underground strata. Academy of 
Sciences of the USSR, Moscow. 117 pp. 
Rogers, L., R. Lavigne and J. L. Miller. 
1972. Bioenergetics of the western harvester ant in the shortgrass plains 
ecosystem. Environ. EntomoU 1: 763-768. 
SOKAL, R. R. AND F. J. ROHLF. 
1969. Biometry. W. H. Freeman and Co. xxi + 776 pp. 
Snedecor, G. W. and W. G. Cochran. 
1967. Statistical Methods. 6th edition. Iowa State University Press, xiv + 593 
pp. 
Taylor, F. W. 
1977. Foraging behavior of ants: Experiments with two species of Myrmicine 
ants. Behav. Ecol. Sociobiol. 2: 147 167. 
Waloff, N. and R. W. Blackith. 
1962. The growth and distribution of the mounds of Lasius flavus (Fabricius) 
(Hym: Formicidae) in Silwood Park, Berkshire. J. Anim. Ecol. 31 : 
421 437. 
