XL LIST OF SPECIES. 



Page. 



30. CASTOROIDES, Foster. 363 



H5 t Castoroides ohioensis, Foster. Fossil Beaver. Northern Ohio, New York and 



Michigan 363 



31. GEOMYS, Rafinesque. 368 



Ug t Geomys bursarius, Rich. Pouched or Pocket Gopher. Missouri to Minnesota 



and Nebraska 372 



117. Geomys breviceps, Baird, (n. s.) Short-Headed Gopher. Louisiana to Middle 



or Western Texas 378 



U8. Geomys pinetis, Rafinesque. Salamander. Georgia and Florida. (Alabama, 



Aud. & Bach.) , 380 



119. Geomys clarkii, Baird, (n. s.) Pecos Gopher. Pecos River, Texas 383 



120. Geomys castanops, Leconte. Chestnut-Faced Gopher. Bent's Fort, Upper 



Arkansas River 384 



NOTE. The two following Mexican species are referred to * 



Geomys hispid us, Leconte. Mexico 386 



Geomys mexicanus, Leconto Mexico 387 



32. THOMOMYS, Maxim. 388 



121. Thomomys bulbivorus. California Gopher. Coast of California, from Tejon 



valley to Petaluma 389 



122. Thomomys laticeps, Baird, (n. s.) Broad-Headed Gopher. Humbolt Bay ,Cal.. 392 



123. Thomomys douglassii, Giebel. Oregon Gopher. Columbia River and Puget's 



Sound to the Dalles 394 



124. Thomomys borealis, Upper Columbia River? Canoe Creek, Cal. (East of Cascade 



mountains.) 396 



125. Thomomys rufescens, Maxim. Fort Union Gopher. Fort Pierre to Fort Union, 



on the Missouri 39*7 



126. Thomomys umbrinus. Sonora Gopher. Cimarron River, N. M., west to the 



Rocky Mountains, and south into Sonora 399 



127. Thomomys fulvus. San Francisco mountains, N. M., to Fort Yuma and San 



Die g 402 



33. DIPODOMYS, Gray. 406 



128. Dipodomys ordii, Woodhouse. Kangaroo Rat. Platte River, along the eastern 



slope of the Rocky Mountains, into Durango and Coahuila, Mexico.... 410 



129. Dipodomys phillipii, Gray. Jumping Rat. Los Angeles, Cal., to Fort Walla- 

 Walla, 0. T., on the Columbia 412' 



