TEIID LIZAEDS OF THE GENUS CNEMIDOPHORUS 83 



At the point of intergnidalioii with (jahir/s tlieic is a complete 

 transition from the characteristic granules of sexllaeatu^ to the 

 larger, better developed, polygons that are usually found in that 

 form. 



The dorsal ground color is usually olivaceous, but in certain 

 geographical areas, particularly the southern tip of Florida, the 

 Tennessee region and Padre Island, off the east coast of Texas, the 

 color becomes black and the rather characteristically widened, poorly 

 defined, j^ellowish, middorsal streak becomes noticeably restricted 

 and better defined so as to tend to produce the appearance of a 

 moderately distinct middorsal stripe. Since this variation occurs 

 in widely separated localities, it is not thought to have especial 

 taxonomic significance. The variation in the position of the upper 

 (third) laterals seems to have much more importance in this respect, 

 since it is the approach of these two stripes toward the middorsal 

 line that marks, in part, the transition to ferylcxus. This tendency 

 and the fading and loss of the yellowish middorsal streak is clearly 

 evident at the point of intergradation between the two. 



The ventral coloration of sexlineatus is like that of ferplexus but 

 differs from that of typical gularis in the absence of a deep bluish 

 suffusion. Perfect transition from white to blue-black is seen at the 

 point of intergradation between sexlineatus and gularis in Texas and 

 Oklahoma. 



Range. — This lizard is distributed over an unusually large area. 

 It inhabits the lower levels in the Eastern United States from Mary- 

 land west to the southern tip of Lake Michigan, northwest through 

 southern Wisconsin to southwestern South Dakota, southwest to 

 north central Colorado, south on the eastern side of the mountains 

 to southern Colorado and the panhandles of Oklahoma and Texas, 

 and southeast to the section of the Gulf coast lying just north of the 

 mouth of the Rio Grande. 



A large number of records are available for sexlineatus^ but there 

 is a surprising lack of them from many areas. The reports will be 

 presented below by States in an alphabetical series. 



ALABAMA.— Autauga County (Autaugaville, U.S.N.M.). Bald- 

 win County {General Report, Loding, 1922, p. 24). Calhoun 

 County {AnnisfoiK Dunn, 1920, p. 13(5). Cullman County {Ar- 

 dell, U.S.N.M.) . Greene County (Eutaw, Yarrow, 1882, p. 43, U.S.N. 

 M.). Henry County {Ahbevilde\,V.S.^M.). Jackson County (.S'anfZ 

 Mountain, Holt, 1924, p. 100). Lee County {Auhum, U.S.N.M.). 

 Lowndes County {Haynesville, U.S.N.M.). Mobile County {Mobile, 

 Loding, 1922. p. 24, M.C.Z.. A.N.S.P.). Montgomery County {Mont- 

 gomery, Yarrow, 1882, p. 44, U.S.N.M.). Tuscaloosa County {Holt, 

 Loding, 1922, p. 24, Mich.). 



