CROCODILIANS, LIZARDS, AND SNAKES. 

 Sceloporus undulatus connobrinus Baird and (lirard — Continued. 



3.S1 



Catalogue 

 No. 



9634 



12673 



15547-9 



15686-7 



16827-84 



16927-30 



16958-6 



17234-5 



21250-8 



21488 



22292-94 



17648-9 



Number 

 of speci- 

 mens. 



Locality. 



Pescao, New Mexico 



La Paz, L. California 



Cook County, Texas 



Blaclj foot Fork 



Tucson, Arizona 



do 



do 



do 



Long Pine, Nebraska 



Hoi Springs, Arkansas.. 



Monilton, Arkansas 



Near Pino Ridge Agency, 

 Soutli Dakota. 



When col- 

 lected. 



July 



-, 1872 

 -, 1882 



From whom received. 



H. W. Henshaw 



L.Belding 



G. H. Ragsdale 



Dr. Haydeu 



P. L. Jbuy 



do.--' 



do 



do 



U. S. Fish Commission. 

 H.H. & C. S.Brimley... 

 F.C.Test 



Nature of 

 specimen. 



Alcoholic. 



do. 



do. 



d... 



do. 



do. 



do. 



do. 



do. 



do. 



do. 



" ,9. garm- 



aiiii." 



SCELOPORUS BISERIATUS HallowelL 



Sceloporus biseriatns Hallowell, Proc. Acad. Nat. Sci. Phila., VII, 1854, p. 93 

 (Posa Creek and El Paso); Report Reptiles AVilliamson's Exp.; Reports of 

 the E.xpl. and Surv. for Pacific R. R., X, 1835, p. 6, pis. \i, viii. — Bocouirr, 

 Miss. Sci. au Mex., Rept., 1874, p. 197, pi. xviii bis, fig. 10.— Stejneger, 

 North American Fauna, No. 7, Pt. 2, 1893, p. 184. 



Scelojiorus smaraffdinua Cope, U. S. G. G. Survey West of the 100th Mer., Zool- 

 og.y, V, 1875, p. 572, pi. xxiv, fig. 2, 1874, not of Bocourt; Proc. Acad. Nat. 

 Sci. Phila., 1883, pp. 15, 18. 



Seelo2)orus utiditlatus smara(jdinus Cope, Proc. Amer. Phil. Soc, XXII, 1885, p. 399. 



Sceloporus undulatus var. hocourtii Boulenger, Cat. Liz. Brit. Mus., 2d ed., II, 

 1885, p. 229. 



Supraorbitals in oue series of five large transverse plates, margined 

 internally by one series and externally by two of smaller hexagonal 

 ones within the superciliaries. Cephalic plates hirge, regular, smooth. 

 Free portion of longe.st hind toe equal to the length of cephalic plates 

 above. Xo decided difference in breadth of scales on back, rump, or 

 tail above; the first, however, decidedly larger than those on sides. 

 Dorsal scales angular, but the edges rather rounded, with moderate 

 carination, very slight spine, and almost no lateral denticulation; the 

 belly scales scarcely or not at all notched. Scales on inside of tibia 

 smooth, without mucro. Femoral pores 14-16. About tifty oblique 

 series of dorsal scales ; thirty-five firm gular fold. Femoral pores about 

 twenty. 



Above olivaceous gray (green to blue in life), with the dorsal series 

 of rounded blotches, bordered behind with lighter gray. No cervical 

 collar, but one or two small spots on shoulder. Chin and sides of male 

 faintly blue. 



Head large and broad. Plates 3 (occipital), 2, 1, 1, 2, 3, and 4 to 

 the four interuasals. Lateral parietals large. External two rows of 

 supraoculars fiat and smooth, hexagonal, and truncate posteriorly. 

 Only one row external to the last one or two large supraoculars. Five 

 acuminate free scales bounding auricular meatus in front. 



The scales are small, there being but about fifty oblique series from 



