40. scELoroBUs. 227 



a. $. Mexico. 



b. (5 . Puebla. 



c. Hgr. Altisco. 



d. 5. Guanaiuato. 



e-l c? $ & ligr. Presidio, W. Mexico. Hr. A. Forrer [0.]. 



m-n. $ & hgr. California (P). 



Tar. horridiis. 



Tropidolepis horridiis, Gray, Cat. p. 209. 

 Sceloporus horridus, IVicgm. Hcrp. Mex. p. 50 ; Bocourt, Miss. Sc. 



Mex., Rept. p. 178, pi. xviii. tig. 8; C'o^^e, Pruc. Am. I'hilos. Soc. 



xxii. 1885, p. 394. 

 Tropidolepis horridus, Dum. S)- Bihr. iv. p. 30G. 

 Sceloporus oligoporus, Cope, Proc. Ac. Philad. 1864, p. 177. 



Distinguished by the smaller number of femoral pores, viz. two 

 to five on each side. 

 Mexico. 



a,b. 5 & hgr. Cuernavaca. 



c. Yg. Ventanas. Hr. A. Forrer [C.J. 



Var. clarkii. 



Sceloporus clarkii, Balrcl Sf Gir. Proc. Ac. Philad, 1852, p. 127, and 



U.S. Mex. Bound. Suro., Rept. p. 5; Yarrow, in Wheeler s Rep. 



Explor. W. 100th. Mer. v. p. 575, pi. xxiii. fig. 1. 

 magister, Hallow. Proc. Ac. Philad. 1854, p. 93, and Rep. U.S. 



Explor. Surv. R. R. x. part iv. 1859, p. 5. 



floridanus, Baird, Proc. Ac. Philad. 1858, p. 254. 



thayerii (nou B. ^' G.), Bocourf, Miss. Sc. iMci:, 



pi. xviii. fig. 5. 



Rejjt. p. 170, 



Femoral pores twelve to fifteen on each side. 

 S. United States ; N. Mexico. 



Smithsonian Institution [P.]. 



This form appears to be completely linked with S. undulatus. 



11. Sceloporus undulatus. 



Tropidolepis undulatus. Gray, Cat. p. 208. 

 Agama undulata {Bosc), Duudin, Rept. iii. p. 384 ; Harlan, Med. 



Phijs. Res. p. 140. 

 Lacerta hyacinthina. Green, Journ. Ac. Philad. i. 1818, p. 349. 



fasciata. Green, I. c. 



Uromastyx undulatus, Merr. Tent. p. 57. 



Tropidolepis undulatus, Graif, (J riff'. A. K. ix. Syn. p. 43 ; Dum. 8)- 



Bihr. iv. p. 298 ; Holbr. N. Am. Herp. ii. p. 73, pi. ix. 

 Sceloporus undulatus. Fitziny. Si/d. Rept. p. 75; Girard, U.S. Expl. 



E.vped., Herp. p. 379, pi. xix. tigs. 15-21 ; Bocourt, Jliss. Sc. Mex., 



Rept. p. 195, pi. xviii. bis. fig. 11 ; Cope, Proc. Am. I'hilos. Soc. 



xxii. 1885, p. 395. 



q2 



