178 
JOURNAL OF MAMMALOGY 
and a leopard. Sometimes I saw where the male had wandered a 
short distance from the tree in the early morning to gather the itando 
plant and fruit, the hulls of which were at the base of the tree beneath 
the nest. 
The gorilla usually left his bed shortly after daybreak in the morning; 
but on several occasions I surprised families, evidently ‘‘sleepy-heads,’’ 
in bed an hour or two after break of day. These usually waited until 
we got very close to the beds and then gave out their disconcerting 
yells and made off. By dusk the gorillas were all in the beds. 
U. S, National Museum, Washington, D. C, 
DIAGNOSES OF SEVEN NEW CHIPMUNKS OF THE GENUS 
EUTAMIAS, WITH A LIST OF THE AMERICAN SPECIES 
By Arthur H. Howell 
Recent studies of the North American chipmunks, based on the 
extensive series in the Biological Survey collection, supplemented by 
a large amount of material loaned by other museums, have revealed 
the existence of a number of unrecognized forms and have resulted in 
a much clearer conception of the relationships of the various forms. 
Since publication of the complete results of these studies may neces- 
sarily be delayed for some time, it is deemed wise to publish now 
preliminary descriptions of the new forms and a list of the species 
grouped to show their relationships. 
Eutamias minimus arizonensis subsp. nov. 
Type. — No. 205,869, U. S. National Museum (Biological Survey collection); 
male adult, skin and skull; from the Prieto Plateau at the south end of Blue 
Range, Greenlee County, Arizona; collected September 7, 1914, by E. G. Holt; 
original number 384. 
Suhspecific characters. — Similar in size and cranial characters to Eutamias 
minimus atristriatus; nearest in color to E. minimus consohrinus, but general 
tone more grayish (less tawny), the shoulders frequently washed with pale smoke 
gray (as in Eutamias cinereicollis) ; tail more bushy and color of under surface 
brighter tawny (about as in operarius). 
Measurements of type. — Total length, 197; tail vertebrae, 87; hind foot, 30; 
ear from notch, 12. Skull: Greatest length, 32.6; zygomatic breadth, 18; mas- 
toidal breadth, 14.5; interorbital breadth, 7.1; length of nasals, 10.1. 
Remarks. — -This race of the least chipmunk is restricted, so far as known, to 
the White Mountains and Prieto Plateau of eastern Arizona. It occurs over a 
