MAMMALS OF THE MEXICAN BOUNDARY. 11 



carefully the hills and plains in the vicinity of the camp, but making 

 no extended trips. 



May 15 to 18, 1892. — Moved to Mosquito Springs, Chihuahua, 

 Mexico, near Monument Xo. 46, on May 15, remaining there until 

 Maj^ 18. Collections were made principally on the Mexican side of 

 the meridian ( 108°, 12^ 29'^64, West) forming the third boundary 

 section. 



May IS to 19, 1892. — Accompanied by Lieut. Francis G. Irwin, jr.. 

 Second Cavalry, Mr. F. X. Holzner, and a section of the pack train, 

 rode to Big Hatchet Mountains, in Grant County, Xew Mexico, camp- 

 ing on a shoulder of the main Hachita Peak, in the piiion-pine zone, 

 at the altitude of about 1,800 meters (5,005 feet), and proceeding 

 thence on foot to the summit (altitude 2,515 meters or 8,350 feet). 

 On May 19 I again climbed to the summit and examined traps set on 

 the preceding day for mammals, after which we returned to Mosquito 

 Springs. A supply of water was left in kegs for Mr. Holzner, who 

 remained until May 25. 



May 20 to -June 4, 1892. — On May 30, in company wath Lieutenants 

 Gaillard and Irw^in, rode to ^Vhite Water, Chihuahua, Mexico (near 

 Monument Xo. 61), and camped there for the night, proceeding on 

 the following day to the San Luis Springs (now known as Lang's 

 Ranch), where we camped and spent the first day of June in explor- 

 ing the west side of the San Luis Mountains. On June 2, we retraced 

 our steps to White Water, returning to the main camp at Dog Spring, 

 Xew Mexico, on June 3. Although made for the purpose of locating 

 future camps Avhere Avood, water, and grass were to be had, this was 

 a successful hunting trip, two Arizona deer (the first obtained), 

 seven antelope, two black timber wolves, two turkeys, and a variety 

 of small game and specimens having been killed and brought in by 

 the three officers. 



June 4 to 12, 1892. — In camp at Dog Spring. From this camp 

 visits were made to the "Lower Corner" Monument (Xo. 53), at the 

 eastern extremity of the fourth section of the boundarj^ formed by 

 the parallel of 31° 20' north latitude, and the Dog Mountains to the 

 northward, of which Emory Peak is the most prominent, were quite 

 thoroughly explored. Many plants were found flowering at this sea- 

 son, and the type specimen of a new species of deer {Odoeoileus 

 crooki) was killed by the writer. 



June 13 to 17, 1892. — On June 13 our camp was removed to "White 

 Water (near Monument Xo. 61), which remained our base camp un- 

 til June 29. From here the East and West Playas valleys or plains 

 and the eastern slopes of the San Luis Mountains, the highest crossed 

 by the Mexican Boundary Line, were explored. Our camps were well 

 supplied with game, which was very abundant. At Lieutenant Ir- 

 win's camp, at San Francisco Water, antelope were shot by troopers 



