r 



VOL. IV.] Notes on a Collection of Mammals. 329 



Muskrats were abundant in the sloughs and marshes in the 

 Carson Valley, Nevada. 



27. Neotoma f2isdpes Cooler. Dusky-footed Wood- Rat. 



A wood-rat supposed to be of this species comes up to at 

 least 3000 feet on the west slope of the Sierra Nevada. Their 

 large nests were seen in the vicinity of Forest Hill, 



28. Thomomys bottce Less. 



A gopher is found from the Sacramento plains up to at least 

 4000 feet. 



29. Zaptis Jiudsoyiicus (Zimm.) Jumping Mouse. 



This mouse is included in the list of mammals found in the 

 Sierra Nevada, on the authority of a trapper, a Mr. Dent, who 

 informed me that he had often taken it with poison placed out 

 for foxes and wild cats. 



30. Erethizon epixantlms Brandt. Western Porcupine. 

 The presence of this species was noticed in numerous places 



in the high Sierra. Many pine trees about Mt. Tallac and 

 Pyramid Peak had patches of gnawed bark, and the animal's 

 quills were frequently found. A single dead specimen was found 

 in a meadow near Pyramid Peak on August 10. 



31. Lepiis sylvaticus aiiduboni (Baird.) Cottontail Rabbit. 

 A few specimens of this rabbit were seen on the Forest Hill 



Divide, at about 3000 feet. They are abundant from the Sacra- 

 mento plains up to that altitude or a little less. 



32. Lepus americanus washingtotii Baird. Western Vary- 

 ing Hare. 



Some of this species were seen about Dutch Flat, in Placer 

 County, in the winter of 1891-92. In the high Sierra I am told 

 that they are nearly white in midwinter. 



33. Lepits texianus Waterhouse. Texan Jack Rabbit. 



A few specimens were seen along the base of the mountains 

 west of the Carson Valley. 



34. Lepus califorjiicus Gray. California Jackass Rabbit. 

 This species is very abundant in the Sacramento Valley and 



in the mountains to at least 2500 feet. Some were seen on the 

 lower end of the Forest Hill Divide. 



