176 U.S. NATIONAL MUSEUM BULLETIN 233 



White-winged Dove 



Zenaida asiatica (Linnaeus) 



In an earlier paper (1933, p. 189) I noted a single record of this 

 dove as a cowbird victim. Since then no other has come to my 

 attention. The unique instance was observed by J. T. Wright at 

 Guirocoba, Sonora, during late May, 1931. The dove involved was of 

 the race Z.a. mearnsi; the parasite, T.a. milleri. 



Ground Dove 



Columbigallina passerina (Linnaeus) 



The ground dove is a purely accidental victim. There is but a 

 single record, which I have seen in the sale catalog of an egg collec- 

 tion; the latter was offered in 1929 to the late Senator F. C. Walcott, 

 who showed the record to me. As the eggs were said to have been 

 taken in southern Arizona, the parasite must have been of the race 

 T.a. milleri; the host, of the race C.p. pallescens. 



Rose-throated Becard 



Platypsaris aglaiae (Lafresnaye) 



A single instance of the rose-throated becard as a victim of the 

 bronzed cowbird has come to my notice. In his price list of eggs for 

 sale, Schliiter (1899) mentioned a set of eggs of this bird (under the 

 name Hadrostomus alhiventris) which included an egg of Tangavius a. 

 aeneus (probably now to be interpreted as T.a. milleri). 



Tropical Kingbird 



Tyrannus melancholicus Vieillot 



This kingbird was found to have been parasitized by the bronzed 

 cowbird four times to my knowledge, a fair degree of frequency for a 

 bird as seldom studied as this. It happens that these records involve 

 three different races of the host. A parasitized set taken at Browns- 

 ville, Texas, May 24, 1902, by F. B. Armstrong (the eggs are now in 

 the A. E. Price collection. Grant Park, Illinois) is of the race couchii; 

 at Refugio, Texas, T. C. Meitzen (in litt.) obtained another parasitized 

 set of this same subspecies; a third set, found at Mazatlan, Sinaloa, 

 June 14, 1882, by A. Forrer (the eggs are now in the collection of the 

 Florida State Museum, Gainesville), is of the race occidentalis; and a 

 fourth set, taken near San Antonio, Orange Walk, British Honduras, 

 May 2, 1926, by G. D. Smooker (the eggs are now in the R. Kjeuger 

 collection, Helsinki, Finland), is of the subspecies chloronotus. The 

 Sinaloa record involves the race milleri of the parasite, the other 

 three refer to nominate aeneus. 



