1916] Kellogg: Mammals and Birds of Northern California 361 



ear, 11.5; but this is no older, as shown by the teeth, than some of 

 the smaller ones. 



Note: Since the above was written, Howell's Revision of the American 

 Harvest Mice (1914) has appeared, in which the name klamathensis is put 

 into the synonymy of longicaudus. This ruling does not seem to properly 

 dispose of the case, for the Museum of Verebrate Zoology contains material 

 which points strongly towards the existence of a distinguishable race in 

 northeastern California. This form does not appear to be merely an inter- 

 mediate stage between longicaudus and megalotis, as Howell asserts. The 

 cranial characters, as above specified, are too prominent to ignore, and, in 

 combination with color, seem to be of diagnostic value. 



Peromyscus maniculatus gambelii (Baird) 

 Gambel White-footed Mouse. 

 This white-footed mouse was in evidence at all the camps visited 

 during the summer, and was also taken at Helena. A series of 

 forty-one in all was secured (nos. 12745-12759, 13334-13359), rep- 

 resenting the following localities: Helena, Tower House, Mayten, 

 Scott River six miles northwest of Callahan, Jackson Lake, Wildcat 

 Peak, north fork Coffee Creek, Saloon Creek divide, head of Grizzly 

 Creek, head of Rush Creek, head of Bear Creek, Castle Lake. 

 The specimens are variously intermediate in characters between P. 

 m. gambelii and P. m. rubidus, averaging' a trifle nearer the former. 



Peromyscus boylii boylii (Baird) 

 Boyle White-footed Mouse 

 Taken only at Helena and Tower House (nos. 12760-12779), and 

 not found at any of the summer camps, although it was to have 

 been expected at the localities of low altitude. 



Peromyscus truei gilberti (Allen) 



Gilbert White-footed Mouse 



With the exception of one specimen from Mayten, Siskiyou 



County (no. 13333), this mouse also is represented only from Helena 



and Tower House, where eight specimens were secured (nos. 12780- 



12787). 



Neotoma fuscipes fuscipes Baird 

 Dusky-footed Wood Rat 

 Most of our specimens of this animal came from Helena and 

 Tower House, although the species was found to occur also at Scott 



