7,28 Recently published Ornithological Works. [Ibis, 



certainly appears to be a remarkable fact to find an 

 Oceanodroma breeding at a mainland site^ but we liave no 

 other clue to its breeding place. Mr. Murphy proposes 

 to remove this species from the list of North American 

 birds. 



Van Oort on the Birds of Holland. 



[Oraithologiii Neerlandica. lie Vogels van Nederland door Dr. E. D. 

 van Oort. Pts. 13/14, 20 pis. 's Gravenhage (Nijhoff), 4to.] 



The present instalment of this fine work on the birds of 

 Holland contains only plates, no text. These plates deal 

 with the Birds of Prey, some of the Rails and Shore-birds, 

 and the artist, Mr. Koekkoek, seems to improve as he goes 

 on. Most of his pictures are excellent, perhaps a little 

 subdued in tone, but none the worse for that, as the tendency 

 of most bird-artists is to over-colour their plates. Nearly 

 all the species figured also occur in Great Britain, and are 

 familiar to us all, but the Lesser Spotted Eagle, which is 

 portrayed on plate 112, has not so far been placed in the 

 British list. A special feature of these plates is that the 

 several plumages of each species are in most cases represented. 



Petronievics on Archseopteryx. 



[Ueber das Becken, den Schultergiirtel und einige andere Teile 

 der Londoner Archceo2)teryx. (2 plates.) By Branislav Petronievics 

 Geneva, 1921.] 



During a visit to London in 1916, Professor Bianislav 

 Petronievics of Belgrade University persuaded the authorities 

 of the British Museum (Natural History) to have their 

 famous skeleton of Archaopteryx further cleaned from the 

 matrix, with the result that a number of new and interesting 

 points in the structure of the shoulder-girdle and pelvis were 

 revealed. A short preliminary account of these discoveries 

 was given by Prof. Petronievics and Dr. A. Smith Woodward 

 in the ' Proceedings of the Zoological Society,'' 1917, p. 1. 

 The two authors did not agree as to all details, and in the 

 paper now noticed Prof. Petronievics gives a full account of 

 his views as to the structure of Archceopteryx and of Archce- 



