EXPLANATION OF THE PLATES. 7 9 
Page. 
No. 626 b —Fiber zibethicus, L.—No. 626\—Carlisle, Pa... 561 
No. 1587 —? Arvicola austera, Lee.—No. —Calcasieu, La. 539 
No. 1306 —Reithrodon montanus, Bd.—No. VW*—Rocky mountains. 449 
No. 978 —Neotoma floridana, Say. & Ord.—No. VV 8 *—Charleston, S. C. 487 
No. 1595 —Arvicola townsendii, Bach.—No. —Shoalwater hay. 527 
No. 1694 —Neotoma cinerea, Bd.—No. —Milk river, Nebraska. 499 
No. 939 —■? Neotoma fuscipes, Cooper.—No. 939.—Los Angeles, California. 495 
No. 1674 —Neotoma mexicana , Bd.—No. Vo 4 *—Chihuahua... 490 
PLATE LY. 
Fig. 1 —Erethizon epixanthus, Brandt.—No. 1263.—Yellow-haired porcupine.—Bill 
Williams’ fork, New Mexico. 569 
a —under surface of skull; b —upper surface of skull; c—side of skull; d — 
side of lower jaw-; e —upper view of lower jaw. 
Fig. 2 —?Frethizon epixanthus —No. 822.—Upper Missouri. 569 
Upper view of skull. 
Fig. 3 —Erethizon dorsatus, F. Cuv.—Canada porcupine.—No. 3066.—Essex county, 
New York. 568 
Upper view of skull. 
PLATE LYI. 
Fig. 1 —Lepus glacialis, Leach.—Polar hare.—No. 2277.—Newfoundland. 577 
Skull. References a-e as in preceding plate. 
Fig. 2 —Lepus campestris , Bach.—Gray hare.—No. 972.—Fort Union, Nebraska. 585 
References a-e as in preceding plate. 
PLATE LYII. 
Fig. 1 —Lepus callotis, Wagler.—Jackass rabbit.—No. 1191.—Brazos Santiago, Texas, 590 
Skull. References a-e as the preceding. 
Fig. 2 —Lepus californicus, Gray.—No. 2273.—Petaluma, California.. . 594 
References a-e as the preceding. 
PLATE LYIII. 
Fig. 1 —Lepus sylvaticus, Bach.—Gray rabbit.—No. 625.—Carlisle, Pa. 597 
Skull. References a-e as the preceding. 
Fig. 2 —Lepus audubonii, Baird.—No. 2045.—San Francisco, California. 608 
References a-e as the preceding. 
PLATE LIX. 
Fig. 1 —Lepus aquaticus, Bach.—Swamp rabbit.—No. 1228.—Calcasieu, La. 612 
Skull. References a-e as the preceding. 
Fig. 2 —Lepus palustris, Bach.—Marsh rabbit.—No. 2054.—St. Simon’s island, Ga. 615 
References a-e as the preceding. 
