124 Letters, Extracts, Notices, §c. 



Mr. Herluf Winge has put together in this memoir what 

 seems to be a very complete account of the invasion of 

 Sywhaptes paradoxus into Denmark in 1888. The incur- 

 sion commenced on April 26th, when examples were observed 

 near Vordingborg. On the first days in May they were 

 numerous in many localities. Mr. Winge gives exact details 

 as to the occurrences observed in every part of Denmark. 

 A map of the localities would have rendered this part of the 

 subject more intelligible. 



XII. — Letters, Extracts, Notices, tyc. 



We have received the following letters addressed to the 

 Editor of' The Ibis:'— 



Turin Zoological Museum, 



October 27, 1889. 



Sir, — Allow me to send you a few remarks on Mr. Water- 

 house's ' Index Generum Avium/ of which I have lately 

 received a copy. It is a most useful book to the working 

 ornithologist, and I do not wish to criticize it, but only to 

 point out a few omissions and mistakes which have occurred 

 to me on a cursory look through it. I cannot find the 

 following genera mentioned : — 



Erijthrotriorchis, Gurney, MSS. ; Sharpe, P. Z. S. 1875 

 (April 20), p. 338 ; Gurney, Ibis, 1876, p. 65 ; id. List Diuru. 

 B. of Prey, p. 45 (1884). 



Hirundolanius , Clarke, Trans. N.Z. Inst. xiii. p. 454 (1881) ; 

 Buller, B. of New Zeal. 2nd ed. i. p. 119. 



Ionocicca, Salvad. Ann. Mus. Civ. Gen. ser. 2, iii. p. 236 

 (1886). 



Lambruschinia, Salvad. Cat. Uccelli Sardegna, p. 128 

 (1864). 



Mellopitta, Stejneger, Stand. Nat. Hist. iv. Birds, p. 466 

 (1885) ; id. Auk, vi. p. 79 (1889). 



The date (1839) attributed to Bonaparte's ' Introduzione ' 

 to the birds of the ' Fauna Italica/ where the generic names 

 Bonasia, Casarca, Cettia, Chettusia, Chlorospiza, Citrinel/a, 



