MAMMALS OF THE MEXICAN BOXJNDAEY. 



Ill 



most conspicuous. This is a well known collecting ground of Messrs. 

 Bendire, Henshaw, Nelson, F. Stephens, Brown, Scott, and Price. 

 The writer also visited the place in April and May of 1885, and 

 again in November, 1893. Mr. Holzner camped there from Novem- 

 ber 5 to 20, 1893, collecting 70 birds and 32 mammals. 



Station No. 48. — "Warsaw Millsj Pima County, Arizona. This 

 camp was located at springs in Holdens Canyon in the Pajaritos 

 Mountains, about 2 kilometers (1.75 miles) north of Monument No. 

 132, 505 kilometers (314 miles) west of the Eio Grande, and 354 

 kilometers (220 miles) east of the Colorado River. Altitude, 1,220 

 meters (4,003 feet). I was there from December 1 to 7, 1893, and Mr. 

 Holzner, from November 29 to December 7, 1893. For collecting, this 

 camp was unfavorably located, in a barren and rocky canyon. The 

 only timber was a scanty growth of glaucous-blue and Emory oak 

 {Quercus oblongifolia and Q. emoryi). Birds and mammals were 

 scarce in the vicinity, though numerous in more favorable localities 

 in the neighborhood.' Remunerative trips were made to Monument 

 No. 127, and to Bear Valley, near Oro Blanco Picacho, at the head 

 of Canon de los Alisos, where a stream of fresh water, containing 

 fish, and tributary to^|;he Altar River, was shown us by Mr. C. W. 

 Kempton, the manager, of El Volador Mine, at Oro Blanco. Some of 

 the nearer canyons were well wooded with cottonwood, oak, walnut, 

 hackberry, and sycamore, but were too difficult of access to be vis- 

 ited often from our camp at Warsaw Mills. 



Flora of Pajaritos Mountains. — The following-named trees were 

 observed in the Pajaritos Mountains, between Monuments Nos. 122 

 and 140 : 



Pinus cemJiroides Engelmann. 



Juniperus pachyphlwa Torrey. 



Tucca trevifoUa Torrey. 



Yucca sp. 



Juglans rupestris Engelmann. 



Salix nigra Marshall. 



Salix occidentalis longipes (Anders- 

 son) Bebb. 



Salix tuxifolia Humboldt, Bonpland, 

 and Kunth. 



Popuhis fremontii Watson. 



Quercus otlongifolia Torrey. 



Quercus arizonica Sargent. 



Quercus toumeyi Sargent. 



Quercus ohrysolepis Liebmann. 



Celtis occidentalis Linnaeus. 



Morus celHdifoUa Humboldt, Bonpland, 

 and Kunth. 



Platanus wrigMii Watson. 



Cercocarpus parvifoUus pauoidentatus 

 Watson. 



Prunus salicifoUa Humboldt, Bon- 

 pland, and Kunth. 



Acacia greggii Gray. 



Prosopis glandulosa Torrey. 



Parkinsonia aculeaia Linnseus. 



Parkinsoiiia microphylla Torrey. 



RoMnia neomexicana Gray. 



Ptelea trifoUata Linnisus. 



Sapindus marginatus Willdenow. 



Cereus giganteus Engelmann. 



Opuntia ftolgida 'Engelmann. 



Opuntia versicolor Engelmann. 



Opuntia spinosior (Engelmann) Tou- 

 mey. 



Arctostapht/los pungens Humboldt, 

 Bonpland, and Kunth. 



Zixyphus oMusifolius Gray. 



Fraxinus velutina Torrey. 



Ghilopsis linearis (Cavanilles) Sweet. 



Sambucus mexicana Presl. 



Nicotiana glauca Graham. 



