577 



always found it to hold good. In Acrocephalus streperus the second (or first long) quill is shorter 

 than the fourth ; or in rare instances they are nearly equal in length ; whereas in A. palustris the 

 second quill is always longer than the fourth. As a rule, A. palustris has a rather longer wing 

 than A. streperus; but I find some exceptions to this. 



The specimen figured, on the same Plate with Acrocephalus streperus, is the adult bird 

 above described, and is in my collection. 



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



E Mus. H. E. Dresser. 



a. Valkensvaard, Holland, May 29th, 1876 (C. B. Wharton), b. Antwerp, 1870 (Kroeyert). c, ? . Halle, 

 Saxony (W. Schliiter). d,<3. Westphalia (W. Schliiter). e, d. Piedmont, May 6th, 1870 (Salvadori) . 

 f, S . Piedmont, May 26th, 1870 {Salvadori) . 



E Mus. II. B. Tristram. 

 a, £ . Holstein. 



E Mus. Howard Saunders. 



a, 6 . Malaga, September 24th, 1873. b. Malaga, September 13th, 1872. c, 3 , d, 5. Savoy (Schliiter). 

 e, <3 . Pomerania, May (Kriiper). f,g,<3. Astrachan, April. 



