124 ZOOLOGY. 



Castor fiber, SAY, Long's Exped. to Eocky Mouiitaius, i, 1823, 464. HARLAN, Fn. 

 Am., 1825, 122. GODMAN, Am. Nat. Hist., ii, 21. DOUGHTY'S (Jab. N. 

 H., iii, 1833, pi. 1. WATERHOTJSE, Charlesw. Mag. N. H., iii, 1839, 598.- 

 DEKAY, N. H. N. Y., i, 1842, 72, pi. xx. MARCY, Rep. Red. River, 1852, 

 200. WOODH., Sit.gr. Eep. Zufii & Colorado, 1854, 47. ALLEN, Proc. Bost. 

 Soc. Nat. Hist., xvii, 1874, 47. 



Castor fiber, amcricanus, EiCH., F. B.-A., i, 1829, 105; Zool. Bcechey's Voy., 1839, 6. 

 AUD. & BACH., Quad. N. Am., i, 1849, 347, pi. xlvi. 



Castor Bearer, PENN., Hist. Quad., 1781, No. 251. Id., Arct. Zool., i, 1784, 98. 



Le Castor dc Canada, GEOFF. & F. Cuv., Hist. Nat. des Mauim., iii, 1819. 



Distributed throughout entire area of North America, in suitable local- 

 ities, excepting where population has driven it away. Seen by different 

 members of the expedition in great numbers from South Park, Colorado, 

 south to the New Mexican boundary, near foot-hills and parks of main 

 range. 



Quite common throughout the Territory of Utah, but particularly 

 abundant in Bear Valley, near Parowan, upon a small stream, one of the 

 tributaries of the Sevier. Exceedingly shy, none being captured. Quite a 

 traffic is carried on in their skins between the Indians and Mormons. A 

 portion of one of their dams was broken down in order that their efforts to 

 replace it might be perceived, but without success, although a careful watch 

 was kept for two nights. 



This animal is very common near Camp Verde, Ariz., in the various 

 streams emptying into the Rio Verde, especially Beaver Creek. It also occurs 

 at various places along the Colorado River, where cottonwoods and willows 

 abound. 



FAM. HYSTRICIDAE. 



Genus ERETHIZON, F. Cuvier. 

 EKETHIZON EPIXANTHUS, Braudl. 



Yel low-haired Porcupine. 



Eretlrizon epixanthus, BRANDT, Mem. Acad. St. Petersb., 1835, 389, 416, pi. 1, pi. 9, f. 

 1-4. SCIIINZ, Syn., ii, 1845, 206. WATERH., Nat. Hist, Mainui., ii, 1848, 

 442. BAIRD, Mamm. N. A., 1857, 569. COTJES, Am. Nat., i, 1867, 531. 

 ALLEN, Proc. Bost, Sou. Nat. Hist,, xvii, June, 1874, p. . 



Several seen on the Arkansas River, and in Colorado and New Mexico. 



