TEIID LIZAi;l)S OF TTIK GEXUS CNEMIDOPHORUS 25 



10. A narrow luiddnrsMl slripf ahsciit 21. 



A narrow middorsal strii»e present 20. 



2l>. Middorsal striiie nsnally wavy: general gnnuul color varied, often blackish 

 (especially sontlicni Fl.irid:i .iiid certain areas in Tennessee and Texas). 

 Itrnwiiisli. or LTayisli : at times lower lateral field aliruptly ligliter (jiray- 

 islii. tiian. and shaipix cont lasted with, an upper lateral field of brownish 

 or hlackis.h (west i : dorsal irraniiles nsnally finely ;:rannlar (east), but 

 often larger (west); an indefinite, yellowish middorsal streak sonii'tinies 



present C. sexlineatus sexlineatus ( l.iniiaeus ) , \). TO. 



(Eastern coastal plain from New Jersey to Florida: also the Missis- 



.sippi Valley north to Wisconsin and west to the Kocky Mountains, t 



Middorsal stripe usually straight: general ground color brownish or grayish, 



rar.^ly black, that of the lower lateral field (although s-onietimes lighter) 



not abruptly coiiri'asred with the ground color of the upper lateral field; 



dorsal granules tistially relatively large: yellowish middorsal streak 



abs.ent C. sexlineatus perplexus (Haird and Cirartli. p. 12"J. 



(T'tah and Colorado, sotith throtigh Arizona. New Mexico and western 

 Texas into nortliern Mexico, i 

 21. Dorsal stripes closer to stripes below them tlian to each other: yellowish 



middorsal strealv usually present 22. 



Dorsal stripes closer to each other than to stripes l)elow them: yellowish 

 middorsal streak never persenr. 



C. sexlineatus perplexus (Baird and Girard), p. 122. 



(Utah and Colorado, south through Arizona, New :Mexico and western 



Texas into northern Mexico.) 



L'2. A widened, poorly defined, yellowish, middorsal streak usually present, at 



least anteriorly: ground color varied, often blackisli : cohu- of back often 



abruptly lighter than that of the lateral fields; ground color of lower 



lateral fields sometimes grayish in contrast to dark of upper lateral field; 



dorsal granules usually fine (east), hut sometimes coarser (west). 



C. sexlineatus sexlineatus ( Linnaeus i. p. T'i. 



(Eastern coastal plain from New Jersey to Florida; also, the Mis.sissippi 



Valley north to Wisconsin and west to the Rocky Mountain<?.) 



(iround color of back and sides a uniform grayish or brownish, seldom 



b.ackish (Arizona): ground color of sides, although sometimes a little 



lighter, not abruptly contrasted with that of black; dorsal granules us.ually 



coarse C. sexlineatus perplexus (Baird and (Jirard), p. 1"J2. 



( rtah and Colorado, south tln-ongh Arizona, New .Mexico and western 

 Texiis into northern ^lexico. i 



2.H. Back with less than eight narrow stripes 25. 



Back with eight narrow stripes 2-1. 



24. Dor.sal stripes often indistinct, usually wavy, of lesser intensity than lateral 



stripes; yellowish middorsal streak sometimes present 28. 



Dorsal strijies distinct, straight, of same intensity as lateral stripes: yellow- 

 ish middorsal streak absent. 



C. sexlineatus perplexus iltaird and Cirardi. ji. 122. 

 ( rtah ami Colorado, south thi'ongh Arizona. New Mexico ami westeri; 

 Texas into northi'm ^lexico. I 



2"). r.ack with less than seven stripes 27. 



Back with seven stripes 26. 



2;^()(;— 31 3 



