No. 3. 
REPORT ON REPTILES COLLECTED ON THE SURVEY. 
BY S. F. BAIRD. 
SCELOPORUS GRACIOSUS, B. & G. 
Sceloporus graciosus, B. & G. Pr. A. N. Sc. VI, April, 1852, 69.— Ib. Stansbury, Great Salt Lake, 1852, 346; 
pi. v, fig. I. 
Sceloporus gracilis, B. &. G. Pr. A. N. Sc. Oct. 1852, 175.— Girard, Herp. U. S. Ex. Ex. 1858. 
2842. Valley of Salt Lake City. 
? SCELOPORUS OCCIDENTALIS, B. &. G. 
Sceloporus occulentalis, 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. 
?SCELOPORUS LONGIPES, Baird. 
Sceloporus longipcs, Baird, Pr. A. N. Sc. Dec. 1858. 
2863. Salt Lake valley. 2863. Salt Lake. 
CROTAPHYTUS COLLARIS, Holbrook. 
Plate XXIV, Fig. 1. 
Agama collaris, Say, Loug’s Exped. II, 1823, 252. 
Crotaphytus 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 WISLIZENII, B. &. G. 
Crotaphytus wislizcnii, B. & G. Pr. A. N. Sc. VI, April, 1852, 67. 
Crotaphytus garnbelii, 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. 
CALLISAURUS VENTRALIS, Baird. 
Honwlosaurus ventralis, Hallowell, 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. 
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