106 BULLETIN 56, UNITED STATES NATIONAL MUSEUM. 



Among the interesting specimens collected were topotypes of Tles- 

 perOmys sonoriensis Le Conte. 



Flora of the town of Santa Cruz, Sonora. — Besides the products of 

 orchards, fields, and gardens, the trees and coarser plants in the 

 immediate vicinity are: 



Juniperus pachyphloea Torrey. 



Yucca brevifolia Torrey. 



Juglans rupestris Engelmann. 



Salix occidentalis longipes (Anders- 

 son) Bebb. 



sali.i- taxifolia Humboldt, Bonpland, 

 and Kuntb. 



Populus fremontii Watson. 



Quercus arisonica Sargent 



Quercus oblongifolia Torrey. 



Celtis occidentalis Linnaeus. 



Moms celtidifolia Humboldt, Bon- 

 pland. and Kunth. 



Platanus wrightii Watson. 



Prosopis glandulosa Torrey. 



Ac( r net/undo Linnaeus. 



Arctostaphylos pungens Humboldt, 

 Bonpland, and Kunth. 



Sambucus glauca Niittall. 



The banks and thickets were covered with grape (Vitis arizonica 

 Engelmann). the hills with dasylirion (Dasylirion wheeleri Watson) , 

 and an abundance of the buffalo currant (Ribes aureum Pursh) grew 

 along the Santa Cruz River banks, together with the usual comple- 

 ment of dock, cocklebur. gourd, and spiny aster. Level and waste 

 places bordering the river are sometimes covered with the prickly 

 .Mexican poppy {Argemone mexicana Linnaeus). 



Station Xo. 40. — Santa Cruz River at Monument Xo. 118 (west 

 of the Patagonia Mountains). Mr. Holzner camped from May 26 to 

 July 10, 1893, near Monument No. 118. 461 kilometers from the Rio 

 Grande, at an altitude of 1,130 meters (3,708 feet), and collected 14 

 mammals and 370 birds. 



Station Xo. 41. — Road-crossing of the Santa Cruz River. Sonora, 

 Mexico, 2 kilometers (1.5 miles) south of Monument Xo. 118. The 

 river is heavily wooded with cottonwood, willow, walnut, very tall 

 mesquites, and other trees. Altitude, about 1.140 meters (3.740 

 feet). Occupied by Mearns and Holzner on October 23 and 24, 1893, 

 when plants, birds, and mammals were collected. 



Station Xo. 42. — Xogales, Arizona. Monument Xo. 122. Alti- 

 tude, 1,174 meters (3,852 feet). Distance from the Rio Grande, meas- 

 ured on the Mexican Boundary Line, 469 kilometers (292 miles) ; dis- 

 tance from the' Colorado River, measured on the Mexican Boundary 

 Line. 389 kilometers (242 miles). The grove of walnut found by 

 Major Emory's parly on Xogales Creek is now replaced by the 

 thriving town of Xogales. to which the walnut trees gave name. 

 Monument No. 122 stands on the north side of International Street. 

 Mr. Holzner collected nine birds and one deer at Nogales in Decem- 

 ber and January, L892; also 55 birds from April 14 to May 24. 

 L893. Assisted by Mr. Holzner. I made collections there from 

 October 24 to 28, L893. In the Pajaritos Mountains, at Xogales, 

 intrusive rock appeared in the form of a coarse granite, of which 



