CLASS I. MAMMALIA: ORDER 7. RODENTIA. 



417 





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THE CAMAS RAT, OR GOPHER. 



The Reddish Pouched-Rat, P. fulvus,h of a light reddish-brown above and whitish beneath. 

 Rs length is five inches, and is found in the western parts of New Mexico. 



The Chestnut-cheeked Pouched-Rat, P. castanops, is of a pale yellowish-brown, is eight 

 inches long, and is found on the southwestern prairies. 



The P. kispidum is of a reddish-brown color, eleven inches and a half long, and is found in 

 Mexico. 



Leadbeater's Sand-Rat, P. umbrinus, is of an amber-brown above, and gray beneath; it is 

 seven inches long, and is found in Louisiana. 



The Mexican Pouched-Rat, P. Mcxicanus, noticed by Gervais, as already mentioned, is eleven 

 inches long, with shiny hair of a cinereous blackish color. 



THE SEWELLEL. 



To this list we may add the Tuft-tailed Pouched-Rat, the Perognathus penicillatus of 

 Woodhouse, which is three and a half inches long, with a tail a trifle longer. It is found in New 

 Mexico. The Saccophorus Bottce, mentioned by Gervais, is probably the same as the Geomys 

 "ufescens of Leconte. 



Vol. I. — 53 



