344 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i08 



when based on series, almost inevitably are based on more than one 

 species. The synonomy given below is, then, tentative, and includes 

 only those references which seem very likely to pertain to: 



Cnetnidophorus perplexus Baird and Girard 



Cnemidophorus perplexus Baird and Girard, Proc. Acad. Nat. Sci. Philadelphia, 

 vol. 6, p. 128, 1852; Appendix f, Reptiles, in Exploration of the Red River 

 of Louisiana, in . . . 1852, p. 239, 1853 (reference to 1852 description). — 

 Cope, U. S. Nat. Mus. Bull. 1, p. 46, 1875 (listed).— Gadow, Proc. Zool. 

 Soc. London, p. 368, 1906 (Bernalillo County, N. Mex.; brief description). — 

 Van Denburgh, Proc. California Acad. Sci., ser. 4, vol. 13, p. 211, 1924 

 (record from Santa Fe (San Ildefonso), N. Mex.; possible). — Burger, Chicago 

 Acad. Sci., Nat. Hist. Misc., No. 65, p. 3, 1950 (diagnosis based on type). 



Cnemidophorus octolineatus, Yarrow, Report upon the collections of batrachians 

 and reptiles, in Geographical and geological explorations and surveys 

 west of the 100th meridian, vol. 5, chap. 4, p. 558, 1875 (San Ildefonso, 

 N. Mex.; possible). 



Cnemidophorus tesselatus perplexus, Cope, Amer. Nat., vol. 26, pi. 18, fig. b, 1892 

 (dorsal color pattern, possibly of type of perplexus); Trans. Amer. Philos. 

 Soc, vol. 17, pp. 34-35, 1893 (redescribes type specimen; pi. 6, figs, a-g not 

 of perplexus; p. 12, fig. b, possibly of perplexus)', in Ann. Rep. U. S. Nat. 

 Mus. 1898, pp. 573-575, 1900 (figure 105 not of perplexus; redescription of 

 type). 



Cnemidophorus sexlineatus perplexus, Burt, U. S. Nat. Mus. Bull. 154, pp. 122, 

 125, 1931 (designates lectotype, gives description). 



Cnemidophorus sexlineatus, Smith and Taylor, U. S. Nat. Mus. Bull. 199, p. 185, 

 1950 (cites perplexus as synonym; specifies type, type locahty unknown). 



Cnemidophorus perplexus perplexus. Smith and Taylor, Univ. Kansas Sci. Bull. 33, 

 p. 363, 1950 (lists species as valid, identifies Rio San Pedro as Devils River). 



Cnemidophorus neotnexicanus Lowe and Zweifel, Bull. Chicago Acad. Sci., vol. 9, 

 pp. 230-247, fig. Ic, pi. 1, fig. a, 1952 (type, Mus. Vert. Zool. Univ. Cali- 

 fornia No. 55807, McDonald Ranch Headquarters, 4,800 ft., 8.7 miles west 

 and 22.8 miles south of New Bingham Post OflFice, Socorro County, N. Mex., 

 Charles H. Lowe, Jr., collector; detailed description, comparisons, and 

 ecology). 



Lectotype: USNM 3060, adult female, type designation bj^ Burt 

 (1931, p. 122). 



Type locality: Herewith restricted to valley of the Rio Grande in 

 Sandoval County, N. Mex., in the vicinity southwest of Santa Fe. 

 Type collected by Dr. William Gambel on his first journey to Cali- 

 fornia, near the end of July 1841. 



Summary 



The type of Cnemido'phorus perplexus was selected by Cope but not 

 clearly designated as such. Burt (1931) followed the procedures 

 recommended by the 13th and 14th International Congresses of 

 Zoology and properly designated USNM 30G0 as the lectotype of this 

 species. The specimen was collected by William Gambel, probably 

 on his first journey to California near the end of July 1841. The type 



