'i9ii J Recent Literature. 287 



was examined that could be reasonably expected to feed extensively on the 

 insect, and its stomach contained remains of some of the pests. Judging 

 from the fondness of birds for the clover leaf weevil (Phytonomus punctatus) 

 and other species of the genus, a large number of birds will probably be 

 found to prey upon the alfalfa weevil. — W. L. M. 



Corrections and Additions to January Installment of Economic 

 Ornithology. — In the list of mosquito-eating birds on p. 141 of the 

 January, 1911, Auk is included tlie Whip-poor-will (Anlroslomus "caro- 

 linensis"). The specific name should of course be vociferus. On the 

 authority of Jas. H. Gaut, formerly of the Biological Survey, the name of 

 the Northern Violet-green Swallow (Tachtjcineta t. lepida) may be added 

 to this list. The writer has recently found mosquitos in the gizzard of a 

 Mallard (Anas platyrhynchos) . 



Three additional species also are noted in Bulletin 3 of the West Vir- 

 ginia Experiment Station; hut the correctness of these records is said to 

 be open to question. 



An additional reference to tick-eating birds is Auk, XXIV, 1907, p. 401, 

 where E. S. Cameron states thai the Brewer Blackbird (Euphagus cyano- 

 cephalus), the Yellow-headed Blackbird (Xanthocephalus xanthocephalus), 

 and the Red-winged Blackbird (Agelaius pheeniceus arclolegw) feed upon 

 sheep ticks in Montana. A newly discovered enemy of the Texas-fever 

 tick is the Fish Crow (Corpus ossifragus). — W. L. M. 



Faxon on Brewster's Warbler. 1 — This paper is a most important 

 contribution to our knowledge of Brewster's, or the White-throated 

 Warbler, Helminthophila leucobronchialis, and practically settles the ques- 

 tion whether this is a hybrid or a legitimate species. It is a record of a 

 series of observations made on three families of warblers during the summer 

 of 1910. 



In two cases the male birds were Golden-winged Warblers and the females 

 Brewster's Warblers; in the third instance both parents were Golden-wings; 

 the young of the first two pairs lacked the clear markings of the Golden- 

 wing, the young of the third pair were unmistakable Golden-wings. The 

 detailed observations on the three families just noted are followed by a 

 statement and discussion of the various hypotheses advanced as to the 

 status of Brewster's Warbler, some sixteen cases being reviewed briefly. 

 Finally the known facts are viewed in the light of Mendel's Law, the in- 

 ference from this, and from the known facts being that Brewster's Warbler 

 is a hybrid between Helminthophila pinus and H. chrysoplera, a deduction 

 quite in keeping with the fact that no instance is known of a mated pair of 

 Brewster's Warbler. 



1 Brewster's Warbler. By Walter Faxon. Memoirs of the Museum of Com- 

 parative Zoology at Harvard College, Vol. XL, No. 2, pp. 57-78, with one colored 

 plate (to be supplied). 



