Recently published Ornithological Works. 649 



it nests in the valleys of the Volga and Ural rivers. He 

 has, moreover, lately found eggs and young in another 

 locality, on the Oka in the Government of Riazan, to the 

 south of Moscow, and his discoveries are now described at 

 full length. 



90. Grossman on the Birds of Hertfordshire. 



[A List of the Birds of Hertfordshire. By ALxn F. Grossman, F.L.S. 

 Trans. Hertf. N. H. Soc. x. p. 86 (1899).] 



There being hitherto no list of the Birds of Hertfordshire 

 in existence, Mr. Grossman has compiled the present, chiefly 

 from various reports that have appeared from time to time in 

 the Transactions of the Hertfordshire Natural History Society 

 and other publications. Some of the records, Mr. Cross- 

 man observes, are open to doubt and require confirmation. 

 The number of species in the list is 216. The only example 

 of the Rock-Thrush {Monticola saxatilis) known to have 

 occurred in Great Britain was obtained at Therfield, in 

 Hertfordshire, in May 1843, 



91. Finsch on new Birds frotn Batu, Sumbawa, and Alor. 



[On three apparently new Species of Birds from the Islands Batu, 

 Sumbawa, and Alor. By Dr. O. Finsch. Notes Leyden Mus. xx. p. 224.] 



From specimens in the Leyden Museum Dr. Finsch 

 describes as new the following species : — Pachycephala 

 vandepolli, from the Batu Islands ; Geoffroyus lanshergii, 

 from Sumbawa ; and Trichoylossus ahrensis, from Alor. 



92. Finsch on the Thrushes of Java. 



[Merula javanua (Horsf.) and M. fumida (S. Miill.) two distinct 

 Species. By Dr. O. Finsch. Notes Leyden Mus. xx. p. 227.] 



It is shown that Merula javanica is difteient from M. 

 fumida, and that there are three species of Thrushes in the 

 highlands of Java, distinguishable by slight, but apparently 

 constant, characters. These are : — Tardus javanicus, from 

 Mount Tjerimai, in Western Java; T. fumidus, from Mount 

 Gede, Western Java ; and T. ivhiteheadi, from Mount Tosari, 

 in Eastern Java. 



