Recently published Ornithological Works. 503 



waters. Leaving Seattle in the spring they cruized along 

 the Alaska coa-<t, and tlience to Copper Island and Kam- 

 chatka until the end of July ; then crossing Behring Straits 

 they sailed along the northern Alaskan coast, and finally 

 wintered near the Alaska-Canadian boundary, and they did 

 not again meet civilization till August 1914. During that 

 time they made large collections of birds at various localities, 

 and the present paper contains their observations and field- 

 notes. A good many of the rarer Waders were found 

 nesting, such as Ereunetes pusillus, Pisobia pectoralis and 

 P, bairdi in northern Alaska, and P. minuta ruficollis in 

 Siberia. 



The following new forms are described : — Larus thayeri, 

 Ellesmere Land and northern Alaska; Histrionicus histrio- 

 nicus pacificus, Kamchatka ; Oidemia deglandi dixoni, Arctic 

 Alaska ; Leacosiicte griseonucha maxima, Copper Is. ; and 

 Nannus hiemalis semidiensis, Semidi Is., Alaska. 



Chandler on the Structure of Feathers. 



[A Study of tlie Structure of Feathers with reference to their taxo- 

 nomic significance, by Asa C. Chandler. Univ. California Publ. Zool., 

 Berkeley, vol. xiii. 19*16, pp. 243-446; 25 pis., 7 text-figs.] 



This is an important and lengthy memoir of over two 

 hundred pages in which the structure of feathers in all 

 their various modifications are reviewed throughout the 

 various orders and families of birds. Previous works on 

 the subject by such authors as Gadow, Pycraft, Wray, and 

 others are fully utilized, and a long bibliography is given. 

 An introduction and a general account of the morphology 

 of feathers occupies some forty-five pages, and this is fol- 

 lowed by the systematic review. In each subordinal group 

 a type is selected and the structure of the feathers described 

 at some length, and a summary of the most important 

 characters is given. 



In the concluding pages the value in taxonomy of the 

 pi'incipal modifi(;ations of feathers as they appear to 

 the author is discussed, and some suggestions as to the 



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