MAMMALS 



6^:> 



Z. trinotatus Rhoads. Color dark ochraceous buff on the sides; 

 dorsal band very distinct ; length 248 mm. ; tail 153 mm. ; 

 hind foot 33 mm.: coastal region, British Columbia to 

 Humboldt Bay. 



Subspecies of Z. trinotalus 



Z. t. allcni (Elliot). Tip of tail often white: Sierras 

 from Mount Shasta to Kern River. 



Z. luteus Miller. Color brighter; length 225 mm.; ,^, 



tail 136 mm.; hind foot 32 mm.: northern New Mexico. M'' v*! 



Z. montanus Merriam. Color dark ochraceous buff; 

 dorsal area sharply defined; tail sharply bicolor; length 

 228 mm.; tail 135 mm.; hind foot 31 mm.: Cascade 

 Range in Oregon. 



Z. orarius Preble. Color dark ochraceous, dorsal 

 area and lower parts strongly suffused with the color 

 of the sides; length 220 mm.; tail 127 mm.; hind foot 

 30 mm.: coast from San Francisco to Humboldt Bay 

 California. 



Z. pacificus Merr. Color similar to Z. orarius; 

 length 225 mm.; tail 141 mm.: hind foot 31 mm.: south- 

 western Oregon and northern California. 



2. NapagQzapus Preble. Similar to Zapus, but 

 without premolars: i species and several subspecies. 



X. insignis (Miller) (Fig. 178). Color of sides 

 yellowish buff; back dark;_belly white; tip of tail white; 

 length 238 mm.; tail 146 mm.; hind foot 31 mm.: Nova 

 Scotia to Maryland; westward to Lake Superior; in 

 meadows and forests, near streams. 



Family 5, Erethizontidae. — Porcupines. Large, 

 short-legged rodents with long, stiff spines or quills 

 mingling with the coarse hair; feet plantigrade; denti- 

 tion 1/1,0/0, i/i, 3/3; molars with long roots: 3 genera, 

 of which 2 are tropical; habits arboreal and nocturnal. 



Erethizon F. Cuvier. Tail short and thick and not 

 prehensile; toes 4 in front, 5 behind: 2 species. 



E. dorsatum (L.). Common porcupine; hedgehog. P'^- 178.— 



/-I T 111-1 -11 • 1 • 1 1 1 1 1 1 NapcEozapus insig- 



Color uniform blackish; quills tipped with black; length nis {after Stone b- 

 900 mm.; tail 150 mm.; hind foot 90 mm.; quills 50 to ^^"■^^• 

 100 mm. long and mostly concealed by the fur; average weight 18 lbs.; 

 maximum weight 40 lbs. : northern America ; Lower Hudsonian, Canadian 



