SAURIAIGUANIDAE SCELOPORUS YARROWI. 595 



I. ZOSTEROMUS. 



Sceloporus zosteromus, COPE, Proc. Acad. Nat. Sci. Phila., 1863, 105 (Lower California). 

 Sceloporus clarl;li, subsp. sosteromus, COPE, Check-List, 1875, 49. 



Judging- from the citations of numerous specimens from various localities 

 in the Report of the Mexican Boundary Survey, tnis species is common along 

 the southern border of the United States. It was not met with by me. Var 

 zosteromus is the Lower California form. 



14. Sceloporus poinsetti, Bd. & Gir. 



Sceloporus poinsettii, BD. & GIR., Proc. Acad. Nat. Sci. Phila., 1852, 120. BD., U. S. 

 & Mex. Bound. Surv., ii, pt, ii, 1859, Reptiles, 5, pi. 29, fig's. 1-3. COPE, 

 Check-List, 1875, 48. 



Quoted from "Sonora" in the Mexican Boundary Report. Obtained in 

 Northern Arizona by Mr. H. W. Henshaw. 



15. Sceloporus scalaris, Wiegm. 



Sceloporus scalaris, WIEGM., Herp. Mex., 1834, 52, pi. 8, f. 2. BD., U. S. & Mex. 

 Bouud. Surv.. ii, pt. ii, 1859, 6. COPE, Check-List, 1875, 49. 



Los Nogales, " Sonora." 



16. Sceloporus marmoratus, Hallow. 



Sceloporus marmoratus, HALLOW., Proc. Acad. Nat. Sci. Phila., 1852, 178. Id., Sit- 

 greave's Exp. Zuui & Col. Riv., 1853, 110, pi. 2. BD., EJ. S. & Mex. Bouud. 

 Surv., ii, pt. ii, 1859, Reptiles, 6. COPE, Check-List, 1875, 48. 



Sceloporus delicatissimus, HALLOW., Proc. Acad. Nat. Sci. Phila., 1852, 178. Id., Sit- 

 greave's Exp. Zuili & Col. Riv., 1S53, 109, pi. 1. 



Not observed by me. The known range of this species, however, 

 extends from Utah into the Sonoran Region. 



17. Sceloporus torquatus, Peale & Green. 



Sceloporus torquatus, PEALE & GREEN, Journ. Acad. Nat. Sci. Phila., ii, , 131. 



COPE, Check-List, 1875, 48 (quotes " Proc. Acad.' by error for Journ. Acad). 



Quoted by Professor Cope from the Sonoran Region. 



18. Sceloporus yarrowi, Cope. 



PLATE XXIII, FIGS. 2, 2b, 2c, 2d. 



Sceloporus jarrovii, COPE, Zool. Expl. W. 100th Merid., antea, p .569. COPE, Check- 

 List, 1875, 48. (N. B. The " Check-List" is published during the passage of 

 the present volume through the press.) 



