vi ISTRODUCTIOX. 



inl'oriuation communicated to me; and I must especially thank Count 

 Salvadori and Dr. Otto Fiasch for their generous contributions, while 

 Prof. Allen, Prof. Ridi;\vay, Mr. llichniond, and Mr. Oberholser have 

 most carefully read through the proofs, and their suggestions have been 

 of great service. All my colleagues in America have throughout the 

 progress of the ' Hand-list ' rendered me most important assistance, while 

 Dr. ydater and Mr. Hartert have done the same for me in this country. 

 To the following gentlemen I have been indebted for special help in the 

 prepai'ation of the present volume : — 



En'jland. — Dr. P. L. Sclater, Mr. Howard Saunders, Hon. Walter 

 Rothschild, Mr. Ernst Hartert, Mr. W. E. Ogilvie Grant, 

 Mr. C. W. Andrews, and Mr. W. P. Pycraft. In the prepara- 

 tion of the Index and in many other respects, I have received 

 great assistance from my indefatigable chief attendant, 

 Mr. Charles Chubb. 



France. — Professor E. Oustalet. 



Holland. — Dr. Otto Finsch. 



German)/. — Professor A. Eeichenow, Dr. A. B. Meyer, Count 

 . von Berlepsch. 



Bussia. — Dr. Bianchi. 



Italy. — Count Salvadori. 



America. — Professor Robert Ridgway, Dr. L. Stejneger, Professor 

 J. A. Allen, Mr. Frank M. Chapman, Mr. C. W. Richmond, 

 Mr. "Witmer Stone, Mr. Harry Oberholser, and Mr. Outram 

 Bangs. 



E. BOWDLER SHAEPE. 

 July 5, 1901. 



