38 



Co., New Mexico. The latter population differs significantly in the 

 relative proportions of two of the four major plasma protein groups 

 found in this species. Morphological comparisons are made; color and 

 pattern also differ significantly. Color photographs of specimens are 

 provided. Statistically significant differences are also found in se- 

 veral scale characters. Nomenclature is discussed, and the type local- 

 ity is restricted to "the junction of the Arkansas River and Fountain 

 Creek", Pueblo Co., Colorado. A 100-mile gap exists at the time of 

 this study between Colorado-Oklahoma and New Mexico-Texas populations; 

 morphological differences are felt to be taxonomically significant. It 

 is suggested that the distribution of C. tesselatus is uniformly ripar- 

 ian, reflecting routes of dispersal. It is further suggested that the 

 current distribution map implies that the species is less widespread 

 than it once was, the range discontinuities reflect withdrawal from 

 previously occupied areas. Current reiictual populations, if indeed 

 that is what they are, further imply a measure of ecological/evolution- 

 ary age for this parthenospecies (opinion of this reviewer). 

 _C. tesselatus can be found in a variety of microhabitats, but are 

 never far removed from some drainage system, however ephemeral. Low 

 shrubby vegetation and few trees characterize habitats. The species 

 seems to prefer sandy-to-siity soils, and not extremely rocky nor gras- 

 sy areas. The species is sympatric with _C. sexlineatus in Colorado and 

 with _C. inornatus and C. tigris in New Mexico. Colorado lizards can be 

 approached within 2-3 feet; they can be followed for extensive periods 

 of time and will approach a lizard noose out of curiosity. New Mexico 

 lizards are extremely wary and cannot be approached any closer than 10 

 feet. The literature is reviewed and the conclusion reached that, on 

 the basis of morphology, there is no indication that unisexual species 

 are more or less variable than bisexual ones. It is suggested that the 

 different morphological characters reported here represent independent 

 genetic factors and that differences between the 2 areas reflects a 

 pattern induced by natural selection. It is further suggested that 

 northern populations of _C_. tesselatus are distinct from southern ones 

 and perhaps worthy of subspecific rank, which is not proposed at this 

 time because of the preliminary nature of this work. 



102. Holman, 3. A. 1979. Herpetofauna of the Nash local fauna (Pleis- 

 tocene: Aftonian) of Kansas. COPEIA 1979(4): 7^^7-749. 



The fauna includes Cnemidophorus sexlineatus , and notes on clima- 

 tic change from maritime to semiarid are given. 



103. Hulse, A. C. 1981. Ecology and reproduction of the parthenoge- 

 netic lizard Cnemidophorus uniparens (Teiidae). ANNALS OF THE CAR- 

 NEGIE MUSEUM 50(14): 353-369. 



A population was studied over a period of 2 years from late May 

 through the end of August at a site approximately 2 miles west of the 



