TEim LIZATIDS OF THE GENUS CNEMIDOPnoHUS 97 



abyent from those fields in other s]U'('iiiiens that are fully as large 

 as the adult sexl 'meatus. The latter are. fortunately, iisuiiUy iden- 

 tifiable on the character of the postantebrachial scutellation. Gadow 

 (1906) failed to discriminate well between sexllneatus and guJaris, 

 apparently because of the small number of specimens that he ex- 

 amined. He admitted sexllneatus to Mexico, because of the loss of 

 spots in certain specimens of r/iiJaris there. He also considered the 

 question as to whether sexlineatus really intergrades with deppii, 

 citing the specimens from Sauz, Chihnaliua, as the '"'' sexllneatus'''' 

 to which the approacli was made. These specimens are here con- 

 sidered as perplcxiis, so the question Avill be discussed elsewhere. 



It appears that sexllneatus, then, is not closely related to deppli, 

 but that it intergrades with guJarls and perplcxus. As has been 

 shown, it differs more from perplexus than from gularis, and inter- 

 gradation with the former is probably only secondary. Therefore, 

 it is presumed that sexllneatus has descended from gularls^ chiefly 

 through the loss of spots in the lateral fields and by the reduction 

 of the size of the postantebrachials. 



CNEMIDOPHORUS SEXLINEATUS GULARIS (Baird and Girard) 



SPOTTED RACE-RUNNER 



1S52. Cncmidoplwrus ffularis Baird and Girard, Proc. Acad. Nat. Sci. Phila., 

 p. 128 (type locality, " Indiauola and the Valley of the Rio Grande del Norte," 

 Texas; 14 cotypes, U.S.N.M. Nos. 3022 and 2989; Col. Graham, collector); 

 Expl. Red River of La. (1852), 1853, p. 239.— Hallowell, Proc. Acad. Nat. Sci. 

 Phila., 1854, p. 192.— Baird, Reptiles, in " U. S.-Mex. Boundary Surv.." 1859. 

 p. 11; Reptiles, Pacific R. R. Surv. (Whipple and Ives Route), vol. 10, pt. 

 6, no. 4, 1859, p. 38.- GiixxHER, Zool. Rec. for 1866, vol. 3, 1867, p. 123.— 

 HuRTEK, Cat. Reptiles and Batr. Coll. in Mo., printed privately, 1883, p. 7.— 

 Garman, Bull. Essex Inst., vol. 19, 1887, p. 129 (original), and p. 11 (re- 

 print ).—Boulexger, Zool. Rec. for 1891, vol. 28, 1892, " Reptilia," p. 7.— 

 Strecker, Trans. Tex. Acad. Sci., vol. 4, 1902, p. 96. — Browx, Proc. Acad. Nat. 

 Sci. Phila., 1903, p. 548.— Gadow, Proc. Roy. Soc. London, vol. 72, 1903, pp. 

 110, 121.— Stoxe, Proc. Acad. Nat. Sci. Phila., 1903, p. 540.— Gadow, Proc. Zool. 

 Soc. London, 1905, pp. 195, 216.— Brooks, Trans. Texas Acad. Sci. for 1905, 

 vol. 8, 1906, pp. 23, 33.— Strecker, Proc. Biol. Soc. Wash., vol. 21, 1908, pp. 

 49, 73, 89, 167. — Hueier and Streckuj, Trans. Acad. Sci. St. Louis, vol. IS, 



1909, p. 22.— Strecker, Baylor Univ. Bull., vol. 12, 1909, pp. 4, 14; vol. 13, 



1910, p. 8; Trans. Acud. Sci. St. Louis, vol. 19, 1910, p. 70; Baylor Univ. 

 Bull., vol. 38, 1915, p. :J4.— Bradley, Sci. Monthly, vol. 8, 1919, p. 377.— 

 RuTHVEX, Geog. Rev., vol. 10, 1920, p. 243. — Painter, Journ. Exp. Zool., vol. 34, 

 1921, p. 297.— Streckfjj, Bull. Sci. Soc. San Antonio, vol. 4, 1922, p. 20; Baylor 

 Univ. Bull., vol. 27, 1924, p. 36; Contr. Baylor Univ. Mus., vol. 6, 1920, p. 5; 

 vol. 7, 1926, p. 5; vol. 9, 1926, p. 2; vol. 10, 1927, p. 10; vol. 12. 1927, p. 9; 

 vol. 15, 1928, p. 4; vol. 16, 1928, p. 12.— Bvrt, Trans. Acad. Sci. St. Louis, 

 vol. 26, 1928, p. 40.— Strecker, Contr. Baylor I'niv. Mus., no 19, 1929, pp. 5, 13. 



1853. CnemidoiJlionis gulari^ (part) Hallowell, Reptiles, in Sitgreaves' " Rept. 

 of an Exp. down the Zuni and Colo. Rivers," p. 145. — Cope, Amer. Nat., vol. 

 25. 1891, pp. 1135-1136; Amer. Nat., vol. 26, 1892, p. 522.— Stone and Rehn. 



