40 



the Bulimus lubricus, a Helix hispida, and three of 77. rufescens : some of these shells were 

 perfect. 



The figures in the Plate are taken from a specimen in Dresser's collection. The descriptions 

 of the adult breeding bird, and also of the young, are from examples shot in Norway and Russia 

 by our friend Mr. E. R. Alston — that of the winter dress being from a specimen sent by Mr. A. 

 Benzon, of Copenhagen. The exact localities of these birds are given below. 



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



E Mus. II. E. Dresser. 



a, b, c. Turin, November 1870 [Count Turati). d, e. Cookham, Berkshire, February 1869 (J. Ford), f, $. 

 Helsingcer, October 1870 (A. Benzon). g, $ ,juv. Ijma river, Russia, July 3rd, 1872 (E. R. Alston). 



E Mas. J. II. Gurney. 

 a, b, c. Greatliam (J. H. G.). d. Somerset. 



E Mus. II. B. Tristram, 

 a, b, c, d. Durham (J. H. Gurney, jun.). 



E Mus. E. B. Alston. 

 a. Glendonne, Scotland, b. Lien, Norway (E. R. A.). 



E Mus. Feilden and Harvie Brown, 

 a. Dunipace, Falkirk, b. Woolmer Forest, c. Maristuen, Norway (/. A. Harvie Brown). 



