97 



108. Riparia riparia. Bank Swallow. — On April 1 several 



Bank Swallows were observed at the base of Cocopah 

 Mayor. Again, on April 26, I saw numbers foraging 

 over the flooding Hardy. Rhoads noted several along 

 the river in February. 



109. Bombycilla cedrorum. Cedar Waxwing. — '' Not many 



seen" (Rhoads). 



110. Phainopepla nitens. Phainopepla. — Mexican name, 



''Coronado Prieto." Common throughout the region, 

 especially in the mesquites below the Cocopahs and 

 in the Wash Association west of Pattie Basin. About 

 the Tres Pozos water-hole several pairs were usually 

 in evidence. They doubtless fed on the mistletoe 

 berries in neighboring mesquites and ironwood trees. 

 I found that the best way to approach these restless 

 birds, which flew so erratically from perch to perch, 

 was on horseback. The three males and two females 

 collected were all shot from the saddle. 



111. Lanius ludovicianus excubitorides. White-rumped 



Shrike. 



112. Lanius ludovicianus gambeli. California Shrike. 



These dashing tail-waggers were not uncommon at 

 the edge of the desert south of Mexicali, and in the 

 Wash Association west of Pattie Basin, where they 

 seemed to be breeding. We saw none along the Hardy. 



Of three specimens taken by Rhoads, Stone writes 

 that all ''come nearer to gambeli than any other race, 

 though they are not quite typical." I should call my 

 single specimen, a male taken on April 19, excubitorides , 

 though with a similar reservation as to its precise 

 status. Imperial Valley shrikes have always been 

 referred to the subspecies excubitorides. 



113. Vermivora celata lutescens. Lutescent Warbler. — • 



One obtained by Rhoads on February 16. 



114. Dendroica aestiva sonorana. Sonora Yellow War- 



bler. — Common in the Wash Association on the 

 western side of Pattie Basin, where a breeding male 

 was taken on April 5. 



