MAMMALS OF THE MEXICAN BOUNDARY. 



321 



stranded in ( lajon Canyon, brought down by the high waters attending 

 cloud-bursts. 



On San Jose Mountain, Sonora, where it is abundant, I trapped a 

 specimen August 7. is 1 . 1 :'-, at the altitude of 2,194 meters or 7,200 feet, 

 and it doubtless reaches the summit. 



It was numerous in summer throughout the Huachuca Mountain-, 

 where I shot them as late in the year as October 26. Mr. Holzner 

 Doted the following: "No. 897 had 4 pairs of mammae." Of another 

 specimen: ""It has a scent opening which it uses like Spilogale." 

 Again: "Used its sent bag like Spilogalt when killed in trap." 



In the Patagonia Mountains Mr. Holzner noted its presence in 

 numbers as late as November 14. L892. 



On October 28, 1893, ;i great many rock-squirrels were seen between 

 Nogales and Tubac. They were feeding upon mesquite beans. The 

 mesquites along this part of the Santa Cruz River were large trees, 

 and I shot two rock-squirrels on the mesquite tops from my horse. 

 Another was seen to enter a burrow at the base of a mesquite tree, 

 from which it had thrown out enough earth to til! a Hour barrel. 



It is abundant throughout the Pajaritos Mountains: but at La ( >sa, 

 December 8 to 28, L893, we seldom saw them, owing to the coldness 

 of the season. Those obtained as specimen- were taken in rocky 

 places near oak trees; their cheek-pouches contained seeds of various 

 weeds and mesquite beans. At Warsaw, in the Pajaritos, we found 

 the rock-squirrels still active in November, but during the firsl week 

 of December they began to disappear. On a warm day 1 heard a 

 drum-like sound issuing from the desiccated remains of a cow, and on 

 kicking the dry skin a rock-squirrel ran out. 



Record "ml measurements of 60 specimens of Otospermophilus grammurus. 



In >kin. 

 In skin. 



Locality. 



1884. 

 NearWhippleBarracks, Arizona. Maj 9 

 Fori Verde, Arizona Awn. 16 



L885. 

 ....do... .. July 7 



1886. 



Feb. is 



Apr. 3 



Montezuma Well, BeaverCreek, 

 Arizona. 



do 



30639 



Fori Verde, Arizona 



....do 



American Museum of Natural B 

 No. 56—07 M— — 21 



..do.... 



A]ir. 17 

 Apr. is 



fad. 

 >■ ?ad. 



' ad. 



j-ad. 

 rad. 



' ad. 



' ad. 

 l> Mammae live pairs. 



mm. 

 til 







mm. 

 22 

 20 



