ADDENDA. 



In the following pages short references are made to Mr. Ridgway's 

 new synopsis of American Hawks, published in Baird, Brewer, and 

 Bidgway's ' History of North-American Birds ' (vol. iii.). Some of 

 my genera published in the present volume are anticipated in Mr. 

 Bidgway's work, which only arrived in this country a few days ago, 

 too late for quotation or for correction of names, as the sheets of 

 this work were nearly aU printed off. 



Page 18. Neophron pUeatus. 

 b is the type of JS\ carunculatus, Smith, 



Page 25. (ENOPS. 



This genus becomes a synonym of Bhinof/rypJius, Ridgway, B. 'N. 

 Am. p. 337 ; and the species will be H. aura, R. falMandica, R. 

 perniyra, and R. urubitbiga. 



Page 25. (Enops aura. 

 k, I, in. Ad. sk, CaUfonaia. J. H. Gumey, Esq. [P.]. 



■ Page 28. 



(Enops califomiana is the type of Mr. Ridgway's new genus 

 PseudogriqjJius (B. X. Am. p. 338). I do not see at present why 

 this Yulture should be separated from Rhinogryphus ; and the spe- 

 cies will probably stand as R. californianus. 



Page 35. Ibycter americanus. 

 /. $ ad. sk. Demerara. R. B. Sharpe, Esq. [P.]. 



Page 3'J. Ibycter chimachima. 

 For spec. a. S. America, read 

 a. Ad. sk. British Guiana. Sir K. Schomburgk [C.]. 



Add:— 

 I. Juv. sk. Demerara. K. B. Sharpe, Esq. [P.]. 



