LACERTILIA IGUANIDAB S. UNDULATUS, UNDULATUS. 573 



SGELOPORUS POINSETTII, Baird & Girard. 



Sceloporus poinsettli, BAIRD & GIRARD, Proc. Acad. Nat. Sci. Phila., 1852, 120. BD., 

 TJ. S. & Mex. Bound. Snrv., pt. ii, 1859, Reptiles, 5, pi. 29, figs. 1-3. 

 COPE, Check-List N. A. Batrach. & Kept., 1875, 48. 



HAB. Sonoran Eegion. 



Rather uncommon in Southern Arizona ; but three specimens being 

 secured. 



SCELOPORUS UNDULATUS, Harlan, subspecies UNDULATUS, Harlan. 

 Lacerata undulata, DATJDIN, Hist. Nat. des Kept., iii, 384. 

 Stellis undulatus, LATREILLE, Hist. Kept., ii, 1802, 40. 

 Lacerta hyacintMna et fasciata, GREEN, Proc. Acad. Nat. Sci. Phila., i, 349. 

 Uromastyx, MERREM., 57. 



Agama undulata, HARLAN, Mecl. & Phys. Res., 1853, 140. 

 Tropidolepis undulatus, CUTIER apud GRIFFITH, ix, 126. HOLBROOK, N. A. Herp., iii, 



51, pi. viii, aud ii, 73, pi. 9, 2d ed., 1842. DE KAY. Zool. N. Y., 1842, 31. 



TENNEY, Man. Zool., 1866, 296. 

 Sceloporus undulatus, GRAVENHORST, Nov. Acta, xviii, 768. WIEGMANN, Isis, 1828, 



369. BD., P. R. R. Rep., x, 1859, Whipple's Route, Reptiles, 37. 

 Sceloporus undulatus, HARLAN, subspecies undulatus, HARLAN, COPE, Check-List N. A. 



Batrach. & Rept., 1875, 48. 



HAB. North America, except Sonoran aud Lower California!! Regions. 

 Found abundant in Nevada ; less so in Utah in 1872. Scarce in the 

 more Southern Territories. 



A close examination of the specimens captured reveals no points of dif- 

 ference between the eastern and western varieties, excepting a deeper color- 

 ation of the lines and bands in the western form. Inhabiting for the most 

 part rocky ground. 



