50 University of California Publications in Zoology. [Vol. 7 



the two dowitchers meeting somewhere in northern Canada 

 than of the range of the two "varieties" of A. maritima touching 

 at any point whatever. 



The six specimens of Macrorhamphiis g. scolopaceus secured 

 measure as follows : 



Arquatella maritima couesi Ridgway. Aleutian Sandpiper. 



Very abundant at Three-mile Arm, Kuiu Island, during our 

 stay there, but not seen anywhere else. This is, apparently, the 

 southernmost locality at which the Coues sandpiper has been 

 recorded. In company with the black turnstone and some other 

 waders, they frequented the broad mud flats, which, at low tide, 

 extend over hundreds of acres at this point. As the tide 

 advanced their feeding grounds became more and more restricted, 

 until, as the last available spot was covered, the whole flock 

 departed, with roar of wings, to some jutting rocks at the mouth 

 of the bay, there to remain, preening their plumage and resting, 

 until the receding waters again exposed the mud banks. 



The flocks seen at this place comprised many hundred individ- 

 uals, and it is curious that the species was observed absolutely 

 nowhere else. 



The sixteen specimens secured (nos. 9839-9854) are nearly 

 all molting into the summer plumage. Only one or two have 

 quite completed the change, and one or two others have 

 hardly begun to discard the winter garb; in most the winter 

 plumage predominates, with a few chestnut bordered feathers 

 on the back, and black ones on the breast. 



Pisobia maculata ( Vieillot) . Pectoral Sandpiper. 



Three were seen and two secured at Thomas Bay, on August 

 19; and on the 20th a single bird was obtained, possibly the 

 survivor of the previous day. They are all three adults, two of 



