MAMMALS OF THE MEXICAN BOUNDAKY. 



103 



Major Wilcox in the Huachnca Mountains," leave little to be desired 

 more than to separate the trees, as follows: 



Piniis strobifonnis Engelmann. 



Pinus ceml)roi(lcs Zuccurini. 



Pinus arizonica Engelmann. 



Pinus ponderosa scopulonim S. Wat- 

 son. 



Pinus mayrkina Sudworth. 



Phi us cliihuahuaiKi Engelmann. 



Pseudotsuga mucronata (Raflnes(iue) 

 Sudworth. 



Juniperus nionospenna (Engelmann) 

 Sargent. 



Juniperus pacliypklcea Torrey. 



Yucca constricta Buckley. 



Juglans rupestris Engelmann. 



8alix nigra Marshall. 



fSali.r ocidentalis longipes (Anders- 

 sou) Bebb. 



Salij- lasiolepis Bentbam. 



(Sr/Z/.j- ta.rifoUa Humboldt, Bonpland. 

 and Kuntb. 



Populus tremuloides Miebaux. 



Populus fr.emontii Watson. 



Qnercus gamhelii Nuttall. 



Quercus undiilata Torrey. 



Quercus oblongifolia Torrey. 



Quercus arizonica Sargent. 



Quercus reticulata Humboldt and Bon- 

 pland. 



Quercus emoryi Torrey. 



Quercus chrysolepis Liebmann. 



Quercus hypoleuca Engelmann. 



Celt is occidcntalis Linnieus. 



Cellis reticulata Torrey. 



Morus celtidifolia Humboldt, Bon- 

 pland, and Kuntb. 



Plutanus ivrightii Watson. 



Cercocarpus brevifiorus Gray. 



Ccrcocarpus parvifoUus paucideuta- 

 tiis Watson. 



Prunus salicifoUa Humboldt, Bon- 

 pland, and Kuntb. 



Acacia greggii Gray. 



Acacia constricta Bentbam. 



Prosopis glandulosa Torrej'. 



Rohinia neomexicana Gray. 



Ptelea trifoliata Linuiieus. 



Acer saccliarum grandidentatum (Nut- 

 tall) Sudwortb. 



Acer negundo Linnieus. 



Sapindus marginatus Willdenow. 



Arbutus arizonica (Gray) Sargent. 



Arctostaphylos pungens Humboldt, 

 Bonpland, and Kuntb. 



Rhamnus purslrianus de Candolle. 



Fraxinus cuspidata Torrey. 



Fraxinus relutina Torrey. 



Chilopsis linearis (Cavanllles) Sweet. 



Sanibucus niexicana Presl. 



Fauna of Huachnca Mountains. — Many field naturalists have 

 visited this beautiful mountain range, but it continues to yield rare 

 and novel forms of animal life whenever explored. Unfortunately, 

 Mr. Holzner reached the Huachucas (July 2-1) after the breeding- 

 season of birds Avas over, and in a j^ear of phenomenal dryness, when 

 old pine trees died of drought, and birds were obliged to forsake 

 their usual haunts on account of lack of water to drink. This 

 likewise operated to increase the difficulty of finding land-shells, 

 although the molluscan fauna is rich. Mr. Holzner obtained a 

 new rabbit {Lepus foridanus holzneri) and a new pocket-gopher 

 {Thomomys fulvus intermedins) from the aspen zone at the top; 

 and his collections contain fine series of several rare animals. Of 

 batrachians, only a toad, tree-frog, and a frog {Rana virescens 

 'brachyce'p'hala Cope) were observed. Principally through the exer- 

 tions of Maj. Timothy E. AA'^ilcox and, to a less extent, those of Drs. 



a Trans. N. Y. Acad. Sci., XIV, pp. 21-44, issued October 22, 1894. 



