668 



6 



occupy the same nest several years in succession. The eggs, which are usually deposited about 

 the middle of June, are, as a rule, eight or nine in number, and are creamy white in colour, 

 smooth in texture of shell, those in my collection varying in size from 2-jf by Iff to 2ff by 

 Iff inch. 



The specimens figured, an adult male and female, are those above described. 



In the preparation of the above article I have examined the following specimens : — 



E Mus. H. E. Dresser. 



a, <s ad. Stavanger, Norway, February 1871 (R. Collett). b, ? ad. Jurus, Archangel, August 9th, 1875 

 (Piottuch). c, 2jun. Jurus, September 17tb, 1874. d, $ . Dvina, near Archangel, May loth, 1873. 

 e, 2- Archangel, July 17th, 1875 (Piottuch). f, pull. Sweden. 



