11 



149. * . 1987. Lizards and turtles of western Chihuahua. 



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150. * . 1988. Status of Thamnophis sirtalis in Chihuahua, 



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151. . 1989. Amphibians of western Chihuahua. 49: 38-84. 



152. . 1989. Status of Spea stagnalis Cope (1875), Spea 



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153. and David F. Avery. 1982. Buccal floor of reptiles, 



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154. and Benjamin H. Banta. 1962. The distribution of 



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155. * and . 1963. The systematics of Crotaphytus 



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 a description of a new subspecies from the upper Colorado 

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156. and . 1966. A systematic review of the Great 



Basin reptiles in the collection of Brigham Young 

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157. * and . 1977. The systematics of Crotaphytus 



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158. * and Arden H. Brame, Jr. 1961. Description of a new 



species of salamander from Panama. 21: 23-26. 



159. and Douglas C. Cox. 1981. Reproduction in the snake 



Lampropeltis pyromelana . 41: 314-316. 



160. * , James R. Dixon and Herbert S. Harris, Jr. 1972. A 



new subspecies of Crotalus lepidus from western Mexico. 

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161. , D. Lowell Fisher and Thomas J. Willis. 1971, Notes 



on the life history of Ambystoma tiqrinum nebulosum 



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162. and John E, Krogh. 1973. Ecology of Sceloporus 



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163. * and Charles H. Lowe, 1989, Variations in 



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164. and John R. Ottley. 1981. Reproduction in 



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165. * and W. Gerald Robison, Jr. 1959. A collection of 



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and David F, Avery, 1975; Cox, Douglas C, 1977, 1989; 



Ottley, John R,, 1978. 



166. Thompson, Pamela and Jack W, Sites, Jr, 1986, Two 



aberrant karyotypes in the sagebrush lizard ( Sceloporus 



