246 FIELD COLUMBIAN MUSEUM ZOOLOGY, VOL. III. 



colors are much brighter and deeper, altogether of an orange instead 

 of a pale fulvous hue. A series was procured at the type locality by 

 Mr. J. Rowley. 



Rhithrodontomys catalinae. Sp. nov. 



Type locality: Saint Catalina Island, Santa Barbara Islands, Cali- 

 fornia. 



Gen/, char.: Similar to R. longicauda, but larger; hind foot very 

 much larger. 



Color: Top of head and dorsal region brownish black or buff 

 mixed, black predominating; sides cream buff; indistinct cream buff 

 lateral line; under parts, hands, and feet white, plumbeous of under 

 fur showing through on under parts; large cream buff spot on breast; 

 tail above blackish, beneath soiled white; ears brown. 



Measurements: Total length, 155.7; tail vertebrae, 83.8; hind foot, 



i9-5- 



While resembling in its coloring the well-known R. longicaudus 

 from the coast region of California, the present form is characterized 

 by its larger size, as shown in all the measurements, the length of the 

 hind foot being especially noticeable. 



NEOTOMA. 

 Neotoma fuscipes mohavensis. Subsp. nov. 



Type locality: Ore Grande, Mohave Desert, Kern County, Cali- 

 fornia. . 



Genl. char. : Smaller than JV. f. macrotis, more grayish in color, 

 and with a smaller foot. 



Color: Upper parts dark drab gray, darkest on top of the head 

 and on the dorsal line; sides paler, inclined to buffy; fore legs buffy 

 gray; thighs dark gray or light plumbeous; chin, throat, inner side of 

 fore legs and thighs, and ventral region with the lower part of thighs, 

 hands and feet white; hairs on sides plumbeous at base, all the others 

 on under parts white to the roots; tail above blackish brown, beneath 

 whitish brown, line of demarcation very distinct; ears naked, dark 

 brown. 



Measurements: Total length, 384; tail vertebrae, 173; hind foot, 

 40; ear from notch, 31. Skull: occipito-nasal length, 47; Hensel, 

 39 J zygomatic width, 24; interorbital constriction, 5 ; length of nasals, 

 16; palatal length, 21; length of upper tooth row, 9; length of man- 

 dible, angle to tips of incisors, 31; length of lower tooth row, 8. 



