1922.] Recenihj published Ornithological Works. 205 



and corrected, and we notice that the types of tlie genera and 

 the tvpe-locality of the spr^cies beinj» added, greatly enhances 

 tlie value of the work. As the first part takes up 64 pages 

 against 38 in the corresponding part of the first edition, 

 it is evident that considerable additions have been made to 

 the letterpress. The recently described forms up to the end 

 of 1920 have been placed in the proper places, and some 

 eight new races are here described for the first time. 



Van Oort and the Birds of Holland. 



[Oi-uitliologia Neerlandica. De Vogels van Nederlaiid, door Dr. E. D, 

 van Oort. Afl. 5-9, pp. 121-152, pis. 41-87 & 91-93, 's Uravenhage 

 (Nijhoff), 1920-1921. 4to.] 



Since our last notice of this fine work on the Birds of 

 Holland (Ibis, 1919, p. 552) five more parts have appeared, 

 but only the first of these contained any text, and this dealt 

 with the Geese only. The other parts, nos. G to 9, include 

 the plates of the remainder of the Ducks and three of the 

 Harriers, uith which the second volume will commence. 



The series of plates illustrating the Ducks reflects great 

 credit on the artist, Mr. Koekkoek. Not only are both 

 the sexes and the downy young shown, but also in many 

 cases the eclipse and changing plumages as well ; in some 

 cases the attitudes aie a little stiff' and without much 

 variation, but this is perhaps unavoidable when so many 

 are depicted. The last three plates, devoted to the Harriers, 

 are, to our taste, rather spoilt by the great size of the actual 

 birds as drawn, so that the plates appear to ])e overcrowded, 

 but all the pictures are undouljtedly fine representations of 

 the species. 



We shall look forward to seeing the continiuition of this 

 great undertaking, and hope that Dr. van Oort^s text will 

 soon catch up the plates. 



fVetmore's Recent Papers. 



[Wild Ducks and Duck Foods of tlie I3ear River Marshes, Utah. 

 By Alexander Wetmore. Bull. no. 930, United States Department of 

 Agriculture. Pp. 1-20. 11»21.] 



