^ml^] THAYER AND BANGS BIRDS 15 



breeding grounds somewhere in middle northern Euro-Asia. It 

 does, however, cast a doubt on the name uniclavus Hodgson, which, 

 for all we can tell by his diagnosis, may as well as not have been 

 based on such birds, taken in India. We use it, however, rather 

 than give the form a new one. 



Our two birds afford the following measurements (in millimeters). 



Though constantly on the lookout for it, Mr. Koren never saw 

 an example of the rare Macrorhamphus taczanowskii (Verr.), 

 nor did he find Arquatella maritima couesi Ridg. anywhere on the 

 Arctic coast of Siberia. 



Pisobia acuminata (Horsfield). 



Two adults, male and female, were taken at Nijni Kolymsk, IMay 

 29 and June 2, 1912. The first arrival was May 29; only a few 

 individuals were seen, and the breeding place was not found. 



Mathews, in 'The Birds of Australia,' has pointed out that the 

 spread tail of P. acuminata is different in outline from that of P. 

 pedoralis, and that the bill of the former is much shorter. We 

 agree with him that the two species need never be confused in any 

 plumage, but we cannot accept his radical view that they belong to 

 different genera. In fact it is not stretching generic limits in the 

 least to include both birds with stints, Baird's sandpiper and the 

 white rumped sandpiper in one genus, as appears in the Third Edi- 

 tion, Revised, of the A. O. U. Check-List. 



Pisobia pectoralis (Say). 



Five specimens, three adults of both sexes and two downy 

 young, were taken at Nijni Kolymsk and the mouth of the River 

 Medwjedschij, May 28, June 6 and July 5. 



