1 91 8.] Recently published Ornithological Works. 509 



length, and subsequently reviews the various forms re- 

 cognized by hiin, illustrating their distribution with a 

 sketch-map. He proposes to recognize one new sub- 

 species, A. californica oocleptica, from the coast region of 

 California north of San Francisco Bay. 



Swarth on the Birds of Arizona. 



[Notes on some birds from central Arizona. By H. S. Swarth, 

 Condor, xx. 1918, pp. 20-24.] 



During the summer of 1917 Mr. Swarth spent some weeks 

 in central Arizona, where it is traversed by a scenic high- 

 way known as the "Apache Trail/' between Globe and 

 Phoenix. It is an interesting region, as it appears to be 

 the meeting-place of several Mexican species here reaching 

 their northern limit and certain Rocky Mountain forms 

 which do not go farther south. A list of the more 

 interesting forms met with is given. 



Theobald and others on the food of the Rook, etc. 



[Reports on the food of the Roolc, Starling, and Chaffinch. By F. V. 

 Theobald, W. McGowan, and H. S. Leigh. Suppl. to the Journ. of the 

 Board of Agriculture, May 1915, pp. 1-56.] 



The study of economic ornithology of vast importance 

 to agriculture has been hitherto woefully neglected in the 

 British Islands, especially when we realize what a great 

 deal has been done in this matter on the other side of the 

 Atlantic, and we are glad to see that the Board of Agricul- 

 ture has at last taken the matter up and issued what can 

 only be regarded as a preliminary report. 



Messrs, Theobald and McGowan's report, which is separ- 

 ately presented from that of Mr. Leigh, deals with the 

 stomach-contents of 277 Rooks, 748 Starlings, and 527 

 Chaffinches, not a very large number, perhaps, on which to 

 base final conclusions, especially as no nestlings appear 

 to have been examined. 



On the whole, the balance appears to incline against the 

 Rook as destroying great quantities of grain, while it does 



