81 



of Cnemidophorus ( gularis , grahamii (= tesselatus ), perplexus (= ?), 

 tesselatus (= tigris ) and sexlineatus ). Only the latter are present in 

 C. burti. 



219. Taylor, H. L. 1965. Morphological variation in selected popula- 

 tions of the teiid lizards Cnemidophorus velox and Cnemidophorus inor - 

 natus. UNIV. COLORADO STUDIES, SERIES IN BIOLOGY No. 21: 1-27. 



The morphology, color and pattern of both species is described in 

 detail. Morphometric comparisons are made; each species exceeds the 

 other in the variability of certain characters. _C. inornatus is, in 

 general, the more variable of the two. The triploid parthenogenetic 

 nature of C. velox suggests that intraspecific variability occurring 

 through mutations is unlikely, and implies reorigination (multiple hy- 

 bridization events). Morphological characters may diverge, converge, 

 or both in areas of sympatry, depending on characters and samples exam- 

 ined. The habitat of 2 of the 3 zones of sympatry, both in New Mexico, 

 is described; they appear to be ecotonal or disturbed in nature. 



220. — . 1968. The occurrence of the Teiid lizard Cnemidophorus 

 tigris marmoratus in Arizona. HERPETOLOGICA 2^(2): 162-168. 



Specimens reported here occur in a mapped hiatus for the species. 

 This paper primarily pertains to previous works by Zweifel (1962) and 

 Dessauer et al. (1962) on intergradation between two subspecies of this 

 lizard. 



221. — . and P. A. Medica. 1966. Natural hybridization of the bisex- 

 ual Teiid lizard Cnemidophorus inornatus and the unisexual Cnemidophor - 

 us perplexus in southern New Mexico. UNIVERSITY OF COLORADO 

 STUDIES, SERIES IN BIOLOGY No. 22: 1-9. 



Cnemidophorus perplexus = _C. neomexicanus . 2 out of over 100 

 lizards examined from Dona Ana County appear to be hybrids. They are 

 compared in exhaustive morphological detail to samples of both presumed 

 parental species from in and near the hybridization area. 



222. — , 3. M. Walker and P. A. Medica. 1967. Males of three normal- 

 ly parthenogenetic species of Teiid lizards (genus Cnemidophorus ). 

 COPEIA 1967(4): 737-743. 



The males were found in triploid populations of Cnemidophorus 

 exsanguis (New Mexico), C. tesselatus (Colorado, New Mexico) and _C. 

 velox (Colorado), so they are not significant in terms of possible 



