EXPLANATION OF THE PLATES. 
PLATE XXXIX. 
Fig. 1—Tawideaberlandieri, Baird. —Mexican badger.—No. 1391.—Matamoras, Mexico. 
Mature skull.- Natural size. References as in Plate XX XV. 
Fig. 2—Taxidea labradoria.—Missouri badger.—No. 1178.—Bois de Sioux, Neb....... 
Under view of left side of upper jaw, to show the differences from 7. 
berlandieri. 
Fig. 3—WMephitis mesoleuca, Licht.—W hite-backed skunk.—No. 1886.—Western Texas. 
Very old skull; the sutures all obliterated and the teeth much worn. 
References as in fig. 1. 
PLATE XL. 
Fig.—Procyon hernandesit, Wieg.—Black-footed racoon.—No. 1875.—Bodega, Cal- 
LOND PO rena coc ccaa sees Seer o Sean are Seer anes ne Fe Cet ee 
Rather immature skull, the posterior portion wanting. References as in 
Plate XXXI. 
PLATE XLI. 
Fig.— Ursus horribilis, Ord.—Grizzly bear.—No. 1219.—Pacific coast.......ceccscceseeeee 
Very old skull. Figs. 1-5 as in Plate XXXI. All about one-third 
natural size. Fig. 6, left upper teeth from outside. Fig. 7, left upper 
teeth from below. Fig. 8, left lower teeth from outside. Fig. 9, left 
lower teeth from above. 
PLATE XLII, 
Fig.— Ursus horribilis, Ord.—Grizzly bear.—No. 1220.—Pacific coast............ssseeees 
Rather immature skull; the deciduous teeth just shed. References as in 
Plate XLI, except that figs. 1—5 are half natural size. 
PLATE XLII. 
Fig. 1-9—Ursus arctos, L.—Brown bear.—No. LOSS:—BWeden. i dssteviscazevevesecwacess sn 
Marked two years old. About the same age as the skull on the preceding 
plate. References as in Plate XLI, except that figs. 1-5 are one half 
natural size. 
Figs. 10-13—Ursus americanus, Pallas.—Black bear.—No. 1154.—Prairie Mer Rouge, 
A OUINIATIN TE Sf oeks fe ecce uae es acten sone saten takes skas Cenvacepectuessaeeslecnacrecdaccecttes 
Teeth of natural size. Fig. 10, left upper teeth from outside; fig. 11, 
left upper teeth from below ; fig. 12, left lower teeth from outside ; fig. 
13, left lower teeth from below. 
PLATE XLIV. 
Fig.—Ursus maritimus, la,—Polar bear.—No. 903.—Greenland....... ceseseesseees re eveene 
Adult skull. References asin Plate XLI; figs. 1-5 one-third natural size. 
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