IO SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4O, 



nest examined held one or more eggs of the bronzed cowbird. 

 Webster's records apparently refer to the subspecies magnirostris of 

 the cardinal, while Blacklock's involve the race canicauda. 



Sclater's towhee 



Pipilo albicollis Sclater 



Two more instances of parasitism of this towhee by the bronzed 

 cowbird are reported by J. Stuart Rowley, both found in Oaxaca, 

 Mexico, in July, one in 1962 and one in 1963. 



Olive sparrow 



Arremonops rufivirgata (Lawrence) 



A third record of the olive sparrow as a victim of the bronzed 

 cowbird is reported from Beeville, Texas, by Webster (1964). This 

 instance is the same as that listed under the brown-headed cowbird in 

 this paper, as the nest contained eggs of both species of parasites. 



Song sparrow 



Melospisa melodia (Wilson) 



Previously, a single race (M. m. mexicana) of the song sparrow 

 was known to be victimized by the bronzed cowbird. However, 

 Dickerman (1963) has divided the song sparrows of the Mexican 

 plateau area into a number of races which appear, from his ample 

 material, to be valid. The host records from Mexico City listed in my 

 1963 report (p. 188) must now be considered as M. m. azteca, while 

 the one record from Ciudad Tlaxcala would be M. m. mexicana. 



