INTKODUCTORY NOTES. 137 



these, however, were not very extensive ; the birds especially being found 

 rather scarce. Starting from Fort Wing-ate July 19, a southwesterly course 

 Avas pursued, our destination being Camp Apache, Ariz., where we arrived 

 August 2. During this interval, as we moved slowly, I was enabled to 

 spend considerable time in making collections, and some very interesting 

 results were obtained, especially in the way of birds. From August 2 till 

 September 6, collections were made by Dr. Newberry and myself in the 

 vicinity of Camp Apache and the adjoining White Mountains. This region 

 proved very interesting ornithologically; and, indeed, the general collections 

 made here were perhaps larger than during any other equal period through the 

 season. From here southward, quite a distinct change in the character of 

 the avifauna was noticed, and a number of species were noted either in the 

 vicinity of Camp Apache or a few miles to the northward, that probably find 

 their northward limit here. Such are Pijranga liepatica, Peuccca nificcps var. 

 boucardi, Cyanocitta ultrarnarina var. arizonce, Setophaya picta, Melanerpes 

 formicivorus, etc. 



The Gila River was crossed at a point some sixty miles south of 

 Camp Apache, and a few days' stay along the river gave valuable results 

 in zoology. We arrived at Camp Bowie, Ariz., the southernmost point 

 reached, October 6. From here our route led northward to the Gila River, 

 which was followed to its sources in New Mexico, after which a general 

 northward course was taken for Fort Wingate, which was reached Novem- 

 ber 27, when the field work ended. 



Though no new species were detected, one (Eugenes fulyeus) was added 

 to our fauna, and numerous specimens secured of rare and little known 

 species, while the geographical range of quite a number was widely extended. 

 During the last month, the results in zoology, owing to the lateness of the 

 season, were rather meager. Thus, the region in which most of the obser- 

 vations following Avere made may be stated in general terms to be the south- 

 eastern portion of Arizona and Southwestern New Mexico. 



Mr. Aiken's route during the season of 1874 may be briefly indicated 

 as follows : From the 23d of July till the 5th of August, the time was 

 spent in the neighborhod of Pueblo,. Colo., careful observation here, at this 

 rather unfavorable time, resulting in the note of no less than fifty species 



