242 
Ferguson & Bohlen 
and Roland Sheppard from Topeka, Kansas, for 
their interest, understanding and permission to con- 
duct the study on land under their supervision. Ken 
Derickson generously provided unpublished data 
from his study for use in this paper. Partial defray- 
ment of expenses for this study was provided by 
grant from the Penrose fund of the American 
Philosophical Society; No. 6134, and Kansas State 
University, Division of Biology; and by the Texas 
Christian University, Research Foundation. 
REFERENCES 
Anderson, P.K. 1965. The Reptiles of Missouri. Uni- 
versity of Missouri, Columbia. 
Aubert, J.D. 1966. A behavior study of Uta stans- 
buriana with special emphasis on their push-up 
display pattern. M.S. Thesis, Kansas State Teach- 
ers’ College, Emporia. 
Ballinger, R.E., and G.D. Schrank. 1972. Reproduc- 
tive potential of female whiptail lizards, Cnemi- 
dophorus gularis. Herpetologica 28:217-222. 
Ballinger, R.E., E.D. Tyler, and D.W. Tinkle. 1972. 
Reproductive ecology of a West Texas population 
of the greater earless lizard, Cophosaurus texanus. 
Amer. Midi. Natur. 88:419-428. 
Blair, W.F. 1960. The rusty lizard: A population 
study. University of Texas, Austin. 
Brattstrom, B.H. 1974. The evolution of reptilian 
social behavior. American Zool. 14:36-49. 
Brooks, G.R. 1967. Population ecology of the ground 
skink, Lygosoma laterals (Say). Ecol. Monogr. 
37:72-87. 
Brown, W.L., and E.O. Wilson. 1966. Character dis- 
placement. Syst. Zool. 6:49-64. 
Burkett, R.D. 1962. Two clutches of eggs in the 
lizard, Gerrhonotus liocephalus infernalis. Herpe- 
tologica. 18:211. 
Carpenter, C.C. 1967. Aggression and social struc- 
ture in iguanid lizards. In W.W. Milstead (ed.). 
Lizard Ecology: A Symposium. University of 
Missouri, Columbia. 
Carpenter, C.C. Variation and evolution of stereo- 
typed behavior in reptiles. Part I. A survey of 
reptile behavior patterns. In C. Gans and D.W. 
Tinkle (eds.). Biology of the reptilia. Academic 
Press. (In press) 
Carpenter, C.C. and G. Grubitz. 1961. Time-motion 
study of a lizard. Ecology. 42:199-200. 
Connell, J.H. 1961. The influence of interspecific 
competition and other factors on the distribution 
of the barnacle, Chthamalus stellatus. Ecology. 
42:710-723. 
Derickson, W.K. 1976. Ecological and physiological 
aspects of reproductive strategies in two lizards. 
Ecology 57 :446-458. 
Eisenberg, J.F. 1967. A comparative study in rodent 
ethology with emphasis on evolution of social be- 
havior. Proc. U.S. Nat. Mus. 122 (3597):1-61. 
Ferguson, G.W. 1970. Mating behaviour of the side- 
blotched lizards of the genus Uta (Sauria: Igua- 
nidae). Anim. Behav. 14:89-92. 
Ferguson, G.W. 1971. Variation and evolution of the 
push-up displays of the side-blotched lizard Genus 
Uta (Iguanidae). Syst. Zool. 20:79-101. 
Ferguson, G.W. 1973. Character displacement of the 
push-up displays of two partially sympatric spe- 
cies of spiny lizards, Sceloporus (Sauria: Iguani- 
dae). Herpetologica 29:281-284. 
Ferguson, G.W. Variation and evolution of stereo- 
typed behavior in reptiles. Part II. Social displays 
of reptiles: communication value, ultimate causes 
of variation, taxonomic significance and heritabil- 
ity of population differences. In C. Gans and 
D.W. Tinkle (eds.). Biology of the Reptilia. Aca- 
demic Press. (In press) 
Ferguson, G.W., and C.H. Bolen. 1972. The regula- 
tion of prairie swift (lizard) populations — a prog- 
ress report. Proc. Midwestern Prairie Conference 
3:69-73. 
Fitch, H.S. 1940. A field study of the growth and 
behavior of the fence lizard. Univ. California 
Publ. Zool. 44:151-172. 
Fitch, H.S., and H.W. Greene. 1965. Breeding cycle 
in the ground skink, Lygosoma laterals. Univ. 
Kansas Publ. Mus. Nat. Hist. 15:565-575. 
Fox, S.F. 1973. Natural selection in the lizard Uta 
stansburiana. Ph.D. Thesis, Yale University. 
Goldberg, S. 1973. Ovarian cycle of the western fence 
lizard, S. occidentalis. Herpetologica 29:284-289. 
Goldberg, S. 1975. Reproduction in the sagebrush 
lizard, S. graciosus. Amer. Midi. Natur. 93:177- 
187. 
Guhl, A.M. 1956. The social order of chickens. Sci- 
entific Amer. 194:42-46. 
Harris, V.A. 1964. The life of the rainbow lizard. 
Hutchinson, London. 
Hayne, D.W. 1949. Two methods for estimating pop- 
ulation from trapping records. J. Mammology 30: 
399-411. 
Hoddenbach, G.A. 1966. Reproduction in western 
Texas Cnemidophorus sexlineatus (Sauria, Teii- 
dae). Copeia 1966:110-113. 
Hoddenbach, G.A., and F.B. Turner. 1968. Clutch 
size of the lizard Uta stansburiana in southern 
Nevada. Amer. Midi. Natur. 80:262-265. 
Hunsaker, D. 1962. Ethological isolating mechanisms 
in the Sceloporus torquatus group of lizards. Evo- 
lution 16:62-74. 
Jenssen, T.A. 1970. Female response to filmed dis- 
plays of Anolis nebulosus (Sauria, Iguanidae). 
Anim. Behav. 18:640-647. 
Jenssen, T.A. 19706. The ethoecology of Anolis nebu- 
losus (Sauria, Iguanidae). J. Herp. 4:1-38. 
Jenssen, T.A. 1971. Display analysis of Anolis nebu- 
losis (Sauria, Iguanidae). Copeia 1971:197-209. 
Jenssen, T.A. 1975. Display repertoire of a male 
Phenacosaurus heterodermus (Sauria, Iguanidae). 
Herpetologica 31:48-55. 
Kettlewell, H.B.D. 1961. The phenomenon of indus- 
trial melanism in Lepidoptera. Ann. Rev. Entomol. 
6:245-262. 
Mayhew, W.W. 1965. Reproduction in the sand- 
dwelling lizard Uma inornata. Herpetologica 21 : 
39-55. 
Mayhew, W.W. 1966. Reproduction in the psammo- 
philous lizard Uma scoparia. Copeia 1966:114-122. 
McKinney, C.O. 1971. An analysis of zones of inter- 
gradation in the side-blotched lizard, Uta stans- 
buriana (Sauria, Iguanidae). Copeia 1971:596-613. 
Paine, R.T. 1971. A short-term experimental investi- 
gation of resource partitioning in a New Zealand 
rocky intertidal habitat. Ecology 52:1096-1105. 
