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[Vol. xxxi. 



green moss, placed either on a high sloping bank or wall, or 

 against the trunk of some moss-covered dead tree. 



The eggs, three to five in number, are pure white, 

 smooth and fragile, and usually without much gloss. They 

 are of a rather long pointed oval shape, and the average 

 measurements of 25 eggs are 16'5 x 12*5 mm. 



Two birds obtained by me in Dibrugarh in October- 

 November, 1901, would appear to be of this subspecies, as 

 they are both males with a wing-measurement of less than 

 57 mm. It may be, therefore, that the non-migratory 

 form extends all through the mountain-ranges south of the 

 Brahmapootra, from the Khasia Hills to the Trans- Dikku 

 Naga Hills in the extreme east of Assam. Birds were taken 

 on their nests on the 13th of June, 1908. 



I name this species after Dr. Ernst Hartert, who has 

 done so much to elucidate the difficulties of this most 

 puzzling group of Warblers. 



Dr. Ernst Hartert exhibited an example of the Barn- 

 Owl from the Cape Verde Islands, obtained by the late 

 Boyd Alexander ; he also showed examples of some of the 

 allied forms, and made the following remarks : — 



" In the ' Journal fur Ornithologie/ 1872, p. 23, Pelzeln 

 described an Owl from the island of St. Vincent as 'Stria; 

 iasularis. 3 The specimen was purchased from a dealer in 

 London and was said to have come from St. Vincent 4 in 

 America.' A perusal of Pelzeln's description shows that 

 it refers to the Owl found in St. Vincent, West Indies. 

 Unfortunately, however, the author believed that the bird 

 came from St. Vincent, one of the Cape Verde group, and 

 Sharpe, Salvadori, and other ornithologists have since nsed 

 the name Strix insularis for the Barn-Owl met with in those 

 islands. It is evident that they could not have read Pelzeln's 

 description. The fact that he says it is the smallest of all 

 Barn-Owls, even smaller than S. punctatissima from the 

 Galapagos Islands, is sufficient to show that he referred to 

 the West Indian bird. Until 1911 the small Owl from 



