CONTKTIÎLTIONS TO TIIK OllNIS Ol' SACHALIX. o9 



Tlic wing of this speciineii is very short, measuring only 

 101 nun., while Swedish specimens have the wing from 105 mm. 

 to 111 mm. long. This fact seemed to indicate a smaller race 

 in Saghalin ; but another specimen from the same island, taken 

 together with its eggs (but unsexed), has the wing-length of 

 105 mm. The difference in size is thus not constant. But 

 the Saghalin sand-martin is darker and has more developed 

 whitish margins to the feathers of rump, upper-tail-coverts, etc. 

 The scapulars and innermost secondaries are also edged with 

 whitish ; especially the tail feathers (except the central pair) 

 has narrow but very distinct white margin to the outer as well 

 as the inner web. 



These characteristics, if proved constant, as I think they are, 

 appear to be sufficient to institute a distinct subspecies upon 

 them. I venture therefore to propose a third name for it and 

 take the pleasure of naming this little sand-martin in honour of 

 Professor Ijima, the leader of the expedition of which the 

 ornithological results are reported upon in this paper. 



It scarcely needs to be emphasized that the type specimen 

 is not a young bird ; I suppose that the time of the year when 

 it was collected sufficiently proves this. In Saghalin sand- 

 martins probably do not hatch out earlier than June 20th, since 

 eggs were collected on June 26th and 29th. Moreover, there is 

 no trace of juvenileness in the structure of the bill and the feet, 

 nor in the plumage. The light margins of the feathers are not 

 sandy but pure white. 



NiKOLSKi has recorded sand-martins from Saghalin. Pro- 

 fessor Ijima has communicated to me that he had found large 

 numbers of them nesting on the cliff along the shore between 

 Tretiya Padj and Soloviyofka. 



