90 PROCEEDINGS OF THE ACADEMY OP 



ject as Prof. Baird has determined it ; especially as iu his forthcoming 

 "Review " the matter will be re-examined. 



(166.) " Pipilo " Abertii Baird. 



One of the most abundant and characteristic birds of the Valley of the 

 Gila and Colorado. Ranges northward to within a few miles of Whipple, bnt 

 is not found in the adjacent mountains. Common at Fort Mojave, and par- 

 ticularly so at Fort Yuma. 



(167.) "Pipilo" ME=iOLEcrctJS Baird. 



Abundantly distributed throughout the warmer portions of New Mexico 

 and Arizona, from the Valley of the Rio Grande to that of the Colorado. Not 

 observed at Fort Whipple, though found breeding some twenty-five miles to 

 the southward. Associates freely with the preceding, and inhabits the same 

 regions ; and the two have very similar habits. 



This species is permanently and very distinct from crissalis, Vigors, of the 

 California Coast, or from albigula of Cape St. Lucas ; which species it replaces 

 in the southern Rocky Mountain region. 



168. " Pipilo " chlorura (Towns.) 



Spring and autumn migrant ; none breed or remain all winter. Pa=ses 

 rapidly by Fort Whipple ; being found only during the latter part of April 

 and beginning of May, and during the month of September. The most silent 

 and retiring of the " Pipilos " being very difficult to observe or capture. 

 "Winters sparingly at Fort Mojave," {Cooper). 



The species varies a good deal in the color of the iris ; e. g., No. 738, iris 

 dark red ; No. 739, iris olive brown ; No. 740, iris reddish brown ; all of 

 which birds were shot at the same time. 



(169.) Pyrrhdloxia sinuata Bonap. 



This Mexican species, introduced into the United States Fauna from the 

 lower Rio Grande Valley, has been taken at Fort Yuma. It is now well 

 known as a common bird of Cape St. Lucas. 



The Cardinalis igneus, Baird, (Pr. A. N. S. Ph., Nov., 1S59, p. 10,) very 

 abundant at Cape St. Lucas, may also very probably be found in the south- 

 western portions of the Territory. 



JCTERID.E. 



170. Molotitrits pecoris (Gm.) Swains. 



Very abundant summer resident ; arrives middle of April and remains 

 until October. Vast numbers seen at Fort Yuma in September. Winters 

 abundantly in the Colorado Valley. 



171. Agel^eus phceniceus (Linn.) Vieill. 



Common ; resident. Most numerous in October and November. Associates 

 constantly and intimately with the succeeding spfcies. 



A. gubernator is given by Dr. Kennerly from Pueblo Creek, Ariz. He very 

 probably made an erroneous identification. It is doubtful if either gubernator 

 or tricolor, so abundant in California, ever cross the desert to the Colorado 

 Valley, except in isolated and accidental instances. 



172. Scolecophagus cyanocephalus (Wagl.) Cab. 



Exceedingly abundant ; permanent resident. The typical Blackbird of 

 Fort Whipple. Comparatively few breed in the immediate vicinity. Towards 

 the end of September they become very numerous, and continue so until 

 May, when few are to be observed until the following fall. Congregate in 

 immense flocks about the clearings, stock corrals, etc., and are tame and 

 familiar. By no means a uiarsk species, but rather a pini'oline one. Their 

 note is a harsh rasping or grating squeak, varied at intervals by a rather 

 melodious ringing whistle. 



[March, 



