Barber — Little-hnown Keic Mexican 3fammals. 193 

 Spermophilus interpres (Merriam). 



On January 5th, 1898, I secured three specimens apparently referable 

 to this species at the base of the Organ Mountains, near the San Augus- 

 tine Pass. That they were mating was evident by their actions and the 

 enlarged sexual organs in both sexes. They were on the east side of the 

 range, among the rocks in a sunny canyon in the foothills. They do not 

 hibernate at all or perhaps only during occasional storms. Efforts to 

 trace their range further north in the San Andreas range were unsuccess- 

 ful, nor have I found the species in any of the other ranges in southern 

 New Mexico. There is a small gap between the Organ Mountains and 

 the Mt. Franklin group (the type locality). These specimens extend the 

 loiown range about fifty miles northward. The following measure- 

 ments were taken in the flesh: 



Male.— Length, 223; tail, 65; hind foot, 38 mm. 



Male.— Length, 240; tail, 86; hind foot, 37 mm. 



Female.— Length, 205; tail, 72; hind foot, 36 mm. 



Putorius frenatus neomexicanus Barber and Cockerell. 



A Mexican brought me a nearly typical specimen of this weasle at 

 Albuquerque, New Mexico, on December 6, 1900. It was a fine male and 

 measured as follows: Total length, 444; tail vertebrae, 176; hind foot, 

 46 mm. This extends the known range of the species about 200 miles 

 north in the Rio Grande valley and is, so far as I know, the sixth speci- 

 men to be taken. It is now in the Biological Survey Collection at 

 Washington, D. 0. 



Putorius arizonensis Mearns. 



Professor G. E. Coghill shot three weasles on the Pecos Forest Reserve 

 above Willis, New Mexico, on July 23d, 1898. The late F. J. Birtwell 

 secured possession of them and I was permitted to examine them. 

 They answer Dr. Mearns' description of the Arizona weasel and 

 are apparently that species. The only measurements available are those 

 of a female as follows: Total length, 332; tail vertebra, 126; hind 

 foot, 38 mm. These seem to be the first specimens of this species 

 taken in New Mexico. Two of these specimen are now in the Museum 

 of Comparative Zoology at Cambridge, and the third is in the A. & M. 

 College collection at Mesilla Park, New Mexico. 



