15 



33. Carpenter, C. C. 1959. A population of the Six-lined Racerunner 

 (Cnennidophorus sexlineatus ). HERPETOLOGICA 15(2): 81-86. 



Seasonal activity, growth rates and movement patterns of a popula- 

 tion in Oklahoma were noted. Behavioral observations were made and it 

 was concluded that the population was a stable one with little immigra- 

 tion or emigration. 



34. — . 1960a. Aggressive behavior and social dominance in the Six- 

 lined Racerunner (Cnemidophorus sexlineatus) . ANIMAL BEHAVIOUR 

 8: 61-66. 



Laboratory and field observations were made on a population in 

 Oklahoma. Lizards were not territorial, but formed social hierarchies. 

 Aggressive behavior is described. 1 or 2 lizards established themselves 

 as dominants in groups formed in the laboratory. Males were usually do- 

 minant over females; the smallest lizards were the most subordinate. 

 Dominant lizards were more active over longer periods of time in both 

 the lab and the field. This may serve to regulate population densities, 

 dominant individuals assuring themselves of an adequate food supply by 

 driving subordinate individuals to less favorable habitats. 



35. — . 1960b. Reproduction in Oklahoma Sceloporus and Cnemidophor- 

 us. HERPETOLOGICA 16(3): 175-182. 



Egg-laying behavior, clutch size and incubation times are given 

 for Cnemidophorus sexlineatus viridis . 



36. — . 1962. Patterns of behavior in two Oklahoma lizards. AMERI- 

 CAN MIDLAND NATURALIST 67(1): 132-151. 



Sexual and agonistic behaviors of both free-ranging and enclosed 

 populations of Cnemidophorus sexlineatus are described in detail. This 

 species is non-territorial but establishes and maintains social hierar- 

 chies. This behavior is seen as the result of the species occupying an 

 essentially two-dimensional habitat. 



37. Christiansen, 3. L. 1969. Notes on hibernation of Cnemidophorus 

 neomexicanus and C^. inornatus (Sauria: Teiidae). J. HERP. 3: 99-100. 



Observations on individuals of both species excavated from bur- 

 rows in Albuquerque are given, along with climatological data. 



