^9 



formation discussed has clearly favored desert species. The very real 

 potential for the future evolution of polyploid bisexual species of 

 Cnemidophorus as revealed by the characteristics of the allotetraploids 

 reported here is discussed. It is suggested that males reported pre- 

 viously in parthenogenetic species of this genus are due to hybridiza- 

 tion events and not to relictual bisexuality. 



129. — , — , — . and — . 1970b. Chromosomes and evolution of the 

 species groups of Cnemidophorus (Reptilia, Teiidae). SYSTEMATIC 

 ZOOLOGY 19(2): 128-1^1. 



31 species are divided into 5 species groups based on chromosome 

 data. The sexlineatus group contains the species burti, exsanguis , fla - 

 gellicaudus , gularis , inornatus , sexlineatus , sonorae, uniparens and ve - 

 lox ; the tigris group contains only tigris , and the tesselatus group 

 contains that species and neomexicanus . The karyotype of the deppei 

 species group appears to be the most primitive among the extant species 

 groups of the genus, and the karyotypes of the other species groups are 

 readily derived from it primarily by means of Robertsonian centric fus- 

 ions and unequal pericentric inversions. The phylogeny of the genus ba- 

 sed on this data is consistent with the overall ecologic and biogeogra- 

 phic distribution of the species. The karyotypically more primitive 

 forms occur in older, more tropical habitats and the karyotypically more 

 derived forms occur in the North American desert. 



130. — , — . and K. 5. Norris. 1966. Analysis of the herpetofauna of 

 Baja California, Mexico: IV. The 3aja California Striped Whiptail, Cnem - 

 idophorus labialis , with key to the striped-unspotted whiptails of the 

 southwest. J. OF THE ARIZONA ACADEMY OF SCIENCES 4(2): 121-127. 



Cnemidophorus inornatus , C. sexlineatus, C. uniparens and _C. velox 

 are treated in the keyl The relationship of CT labialis to"C. inornatus 

 is discussed. 



131. — . cind R. G. Zweifel. 1952. A new species of whiptailed lizard 

 (genus Cnemidophorus) from New Mexico. BULLETIN OF THE CHICAGO 

 ACADEMY OF SCIENCES 9(13): 229-2^*7. 



Cnemidophorus neomexicanus is formally named, and a description 

 and diagnosis are given. The type locality is the McDonald Ranch HQ, 

 4800 ft., 8.7 miles west and 22.8 miles south of the New Bingham Post 

 Office, Socorro County, New Mexico. Variation and ontogenetic change 

 in the species is discussed, and the distribution as then known is 

 given. Ecological comparisons with other species of Cnemidophorus are 

 made. This species and C. inornatus are common on and around playas. 

 _C. tigris is common at the type locality in yucca-grassland bordering 



