LIST OF SPECIES. XLI 



Page. 



130. Dipodomys agilis, Gambel. Fort Yuma and San Diego, Gal., to San Francisco... 414 



34, PEROGNATHUS, Maxim. 416 



a. Perognathus, Max. 417 



131, Perognathus penicillatus, Woodhou'se. Tuft-tailed Mouse. San Francisco Moun 

 tains, New Mexico, to Fort Yuma, California, along Colorado 418 



132. Perognathus fasciatus, Pr. Max. Fort Union, Nebraska, and Fort Riley, Kansas 



Territory, to Chihuahua 420 



133. Perognathus hispidus, Baird, (n. s.) Matamoras 421 



134. Perognathus monticola, Baird, (n. s.) St. Mary's, Rocky Mountains 422 



b. Cricetodipus, Peale. 418 



135. Perognathus flavus, Baird, (n. s.) Upper Missouri, along eastern slopes of Rocky 

 Mountains to Sonora and Chihuahua ; and along the Rio Grande to 



Matamoras 423 



136. Perognathus parvus, Leconte. King's River, California. (Oregon, Peale.) 425 



35. JACULUS, Wagler. 429 



137. Jaculus hudsonius. Jumping Mouse. Nova Scotia, (Labrador, Pennant,) to 



Southern Pennsylvania, and west to the Pacific Ocean 430 



TRIBE MURES. 



36. MUS, Linnseus. 436 



138. Mus decumanus, Pallas. Brown Rat. Throughout North America. ( Introduced.) 438 



139. Mus rattus, L. Black Rat. Throughout North America. (Introduced.) 439 



140. Mus tectoruin, Savi. White-Bellied Rat ; Roof Rat. Tar River North Carolina, 



to Georgia ; Northern Mexico. (Introduced.) 441 



141. Mus musculus, Linn. Common Mouse. North America generally. (Introduced.) 443 



TRIBE SIGMODONTES. 445 



37. REITHRODON, Waterhouse. 447 



142. Reithrodon humilis. Harvest Mouse. South Carolina and Georgia, to St. Louis? 448 



143. Reithrodon montanus, Baird, (n. s.) Rocky Mountains. Lat. 39 449 



144. Reithrodon megalotis, Baird, (n. s.) Sonora 451 



145. Reithrodon longicauda, Baird, (n. s.) San Francisco and Petaluma, California. ... 451 

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