:->:{(> Univi rsity of California Publications in Zoology [Vol. 10 



three stations were the highest ;it which the species was found 

 to occur, these being barely within the limits of Lower Transi- 

 tion. The species here as elsewhere seems to be essentially 

 Sonoran, and affects grassy places of not too moist a character. 



Examination discloses no obvious differences between speci- 

 mens from the San Gorgonio Pass base of the mountains and 

 the few from the Pacific side. There is some variation, and. as 

 in series from elsewhere in southern California, certain examples 

 appear to be more reddish on the rump than any from the 

 San Francisco Bay region. The general tone of coloration. 

 however, is qoI decisively paler than in the northern animals; and 

 the San Jacinto series, as far as it Lines, is satisfactorily referable 

 to R. m. longicauda. 



Neotoma intermedia intermedia Rhoads 

 Dulzura White-footed Wood Ral 



Neotoma intermedia gilva Rhoads 

 Banning White-footed Wood Ral 



Neotoma intermedia desertorum C. II. Merriam 



Deserl Wood Rat 



One hundred and two specimens of wood rats of the inter- 

 media-desertorum category are in our collections from the San 

 Jacinto region. In spite of the fad that the genus Neotoma has 

 been bid recently monographed Goldman, TDK)', this portion 

 of our material has given us much trouble in its determination. 

 In Goldman's paper referred to, intermedia (with its subspecies 

 gilva) and desertorum are treated not only as distinct forms, bu1 

 as species belonging to two "groups" and not nearly related 

 ones — of the subgenus Neotoma within which the author recog- 

 nizes six such subdivisions. This is ;i departure from the early 

 views of ('. II. Merriam (1894, pp. 117-120), who recognizes 

 but four groups, in one of which, "the desertorum group," he 

 includes both intermedia and desertorum. The results of our 

 study prove to be most in accord with the hitter view, and even 

 suggesl strongly the propriety of considering desertorum as bu1 

 a subspecies of inU run din. 



