No. 3. 

 REPORT ON REPTILES COLLECTED ON THE SURVEY 



BY S. F. BAIRD. 



SCELOPOKUS GRACIOSUS, B. & GL 



Scdoporus gradosus, B. & G. Pr. A. N. Sc. VI, April, 1852, 69. IB. Stansbury, Great Salt Lake, 1852, 34G; 



pi. v, fig. I. 

 Scdoporus gracilis, B. &. G. Pr. A. N. Sc. Oct. 1852, 175 GIRARD, Herp. U. S. Ex. Ex. 1858. 



2842. Valley of Salt Lake City. 



PSCELOPORUS OCCIDENTALS, B. &. Q. 



Scdoporus octidentalis, B. & G. Pr. A. N. Sc. VI, Oct. 1852, 175. GIRARD, Herp. U. S. Ex. Ex. 1858, 383; 

 pi. xix, figs. 8 -14. 



2837. Salt Lake valley. The specimen is not in very good condition, and may possibly 

 belong to the next species. 



PSCELOPORUS LONOIPES, Baird. 



Scdoporus longipes, BAIRD, Pr. A. N. Sc. Dec. 1858. 



2863. Salt Lake valley. 2863. Salt Lake. 



CROTAPHYTUS COLLARIS, Holbrook. 

 PLATE XXIV, FIG. 1. 



Agama collaris, SAY, Long s Exped. II, 1823, 252. 



Crotopkytus collaris, HOLBROOK, N. Am. Herp. II, 1842, 79 ; pi. x. 



2729, 2697, 2721. Upper Arkansas to Rocky mountains. These specimens exhibit the usual 

 variety of coloring of the species. 



CROTAPHYTUS WISLIZBNII, B. &. G. 



Crotaphytus wislizcnii, B. & G. Pr. A. N. Sc. VI, April, 1852, 67. 

 Crotaphylus gambelii, B & G. Pr. A. N. Sc. VI, Aug. 1852, 126. 

 Crotaphytus fasciatus, HALLOW. Pr. A. N. Sc. VI, Dec. 1852, 207. 



2698. Salt Lake Basin. 2695. Head of Humboldt. This species was found to be quite 

 abundant in Utah. 



CALL1SAURUS VENTRALIS, Baird. 



Hmnolosaurus ventralis, HALLO WELL, Pr. A. N. Sc. VI, Oct., 1852, 179. 

 Callisaurus ventralis, BAIRD, Herp. Mex. Bound. Surv. 1859. 



2803. Salt Lake Basin. This specimen is more northern in its locality than any collected 

 by the other expeditions. 

 3 a 



