SAURIA— TEIIDAE— (J. MELANOSTETHUS. 603 



Cnemidophorus sexlineatus var. gularis, Cope, Proc. Acad. Nat. Sci. Pkila., 1SG0, 303. 

 Cnemidophorus guttatus, Hallow., Proc. Acad. Nat. Sci. Phila., 1854, 192. — Id., P. R. 

 R. Hep., x, 1S59, Parke's Route, Reptiles, 23. 



Numerous specimens in my collection, from various localities nearly 

 throughout Arizona, where it is abundant. At Fort Whipple, it is the most 

 numerous and characteristic species. It lives in the high dry pine and oak 

 woods, about bushes, brush-heaps, stumps, logs, &c. ; but I never saw it on 

 rocks, nor knew it to ascend the trunks of standing trees. It used to fre- 

 quently enter our tents during the summer, and hunt for flies in a quiet, 

 furtive manner, catching them with great address, and was very favorably 

 regarded by all on this account, though its labors resulted in no sensible 

 diminution of the pests. Though thus familiar, it is an exceedingly timor- 

 ous animal, and darts out of sight upon the least alarm. It is one of the 

 very swiftest of its agile tribe — the eye can scarcely follow it when running 

 at its best on level ground. 



35. Cnemidophorus grahami, Bd. & Gir. 



Cnemidophorus grahami, Bd. & Gik., Proc. Acad. Nat. Sci. Phila., 1S52, 128. — Bd., U. 

 S. & Mex. Bound. Surv., ii, pt. ii, 1859, Reptiles, 10, pi. 32, figs. 1-C. — Cope, 

 Check-List, 1875, 45. 



" Los Nogales, Kennedy." 



36. Cnemidophorus perplexus, Bd. <£• Gir. 



Cnemidophorus perplexus, Bd. & Gir., Proc. Acad. Nat. Sci. Phila., 1852, 128. — Bd., 

 U. S. &' Mex. Bouud. Surv., ii, pt. ii, 1859, Reptiles, 10.— Cope, Check-List, 

 •1875, 46. 



"Tucson, Arizona, Kennedy." 



37. Cnemidophorus tessellatus gracilis, {Bd. & Gir.). 



Cnemidophorus gracilis, Bd. & Gir.j Proc. Acad. Nat. Sci. Phila., 1S52, 128. — Bd., U. 



S. & Mex. Bouud. Surv., ii, pt. ii, 1859, Reptiles, 10, pi. 34, figs. 7-14. — Cope, 



Proc. Acad. Nat. Sci. Phila., 1860, 310. 

 Cnemidophorus tessellatus subsp. gracilis, Cope, Check-List, 1S75, 46. 



Indicated as occurring in this region in Professor Cope's enumeration 



of species additional to those contained in my collections. 



37a. Cnemidophorus tessellatus melanostethus, Cope. 



Cnemidophorus melanostethus, Cope, Proc. Acad. Nat. Sci. Phila., 1863, 104. 

 Cnemidophorus tessellatus subsp. melanostethus, Cope, Check-List, 1875, 46. 



From southeastern portions of Arizona, 



