MAMMALS OF THE MEXICAN BOUNDARY. 



85 



which is largely formed of gray and brown hornblende-mica-andesite, 

 infiltrated with quartz and calcite. 

 The flora is as follows: 



Juniper 11^ yixninsperma (Engelmami) 



Sargent. 

 Quercus toumcyi Sargent. 

 Quercus duniosa Nuttall. 

 Celtis occklentalis Linnams. 

 Moms celtidifolia Humboldt. Rou- 



pland, and Kuntli. 



Pi'osopis f/hiiKliilosa Torrey. 

 Kccberlinia spinosa Zuccarini. 

 Sapindus marginatus Willdenow. 

 Chilopsis linearis (Cavanilles) Sweet. 



The most abundant shrubs and conspicuous plants are the follow- 



ing: 



Yucca haccaia Torrey. 



Yucca glauca Nuttall. 



Nolina texana Watson. 



Nolina lindheimcriana (Scbeele) Wat- 

 son. 



DasyVirlon texanum Seheele. 



Agave pahneri Engelmann. 



Fallugia paradoxa (D.Don) Endlicber. 



Krameria secundiflora de Candolle. 



Fouquirria splciidens Engelmann. 



Covilica tridentata (de Candolle) 

 Vail. 



Ptelea haldwinii Torrey and Gray. 

 Rhus microphijJla Engelmann. 

 Mortonia scabrcUa Gray. 

 Cereus fendJeri Engelmann. 

 Opuntia lindhelmeri Engelmann. 

 Opuntla JeptocauUs de Candolle. 

 Opuntia arhorescens Engelmann. 

 Cucurhita fGctidissiuia Humboldt, Bon- 



pland, and Kuntb. 

 Baccluiris pteronoides de Candolle. 

 Perezia nana Gray. 



Station No. 12. — Big Hatchet Mountain, Grant County, New 

 Mexico. The main peak lies 18.5 kilometers (11.5 miles) west of 

 Monument No. 44, and has an altitude of 2,545 meters (8,350 feet). 

 The lowest jjortion of the plain to the eastward, distant about 22 

 kilometei's (13.5 miles, has an altitude of but 1,250 meters (4,101 

 feet). The zone of pihon pine occupies the upper half of these 

 mountains. At the base are a few red junipers, and at the summit a 

 goodly number of checkerbark junipers. Agave afplanata parryi 

 is found in abundance at the summit, and A. folmeri (" mescal ") at 

 the base. A small spring is said to exist in the Hachita Grande, 

 but it was not discovered. In company wdth Lieut. Francis G. Irwin, 

 Second Cavalry, I established a camp for Mr. Hozlner in the pinon 

 zone, near the main summit of the Hachita Range, May 18 and 19, 

 1892, visiting the summit and collecting reptiles, birds, land shells, 

 and plants. Mr. Holzner remained until May 25, and collected 

 mammals and birds. 



The principal trees are: 



Pinus cembroides Zuccarini. 



Juniper us monosperma (Engelmann) 



Sargent. 

 Juniperus pachyphlcca Torrey. 

 Quercus undulata Torrey. 



Celtis occidentalis Linna'us. 

 Cercocarpus parvifolius paucidentatus 



Watson. 

 Fraxinus cuspidata Torrey. 

 Chilopsis linearis (Cavanilles) Sweet. 



