Occasional Papers of the Museum of Zoology 1 1 



Microlus pcnusylvankiis drummondi. Drummond vole. 

 Fiber zibethiciis spatidatus. Northwestern muskrat. 

 Alces gigas. Alaska moose. 



Equisetum in practically a pure growth is often found growing 

 extensively on wet mud bars along the rivers, and was especially 

 noticeable along the lower Kuskokwim above Bethel. But the 

 habitat is best developed about shallow lakes. Here horsetails 

 may extend out into the lal;^ until the water reaches a depth of 

 about a foot, and they also occupy the adjacent low ground. In 

 favorable places they form almost a pure stand in a belt ten to 

 twenty yards or more in width. 



Sedge habitat and association: 



Rana cantabrigensis latiremis. Northern wood frog. Summer. 



Anas platyrhynchas. Mallard. Summer. 



Nettion carolinense. Green-winged teal. Summer. 



Marila affinis. Lesser scaup. Summer (Osgood). 



Lobipes lobatus. Northern phalarope. Summer. 



Gallinago delicata. Wilson snipe. Summer. 



Tringa solUaria cinnamomea. Western solitary sandpiper. Summer. 



Euphagus carolinus. Rusty blackbird. Summer. 



Mclospiza lincolni lincolni. Lincoln sparrow. Summer. 



Mustela arctica arctica. Arctic weasel. 



Mustela vison ingens. Alaska mink. 



Synaptomys dalli. Dall lemming- vole (Osgood). 



Evotomys dawsoni dawsoni. Dawson red-backed vole. 



Microtus pennsyhaniciis drummondi. Drummond vole. 



Microtus xanthognathus. Yellow-nosed vole (Osgood). 



Fiber zibethicus spatidatus. Northwestern muskrat. 



Alces gigas. Alaska moose. 



Sedges occur to some extent on the river banks, and sometimes 

 grasses are found along the streams at the edge of the forest. 

 Around lakes a belt of sedges is often found surrounding the belt of 

 horsetails, but around lakes containing much decaying vegetation 

 horsetails are not well developed, and the sedges reach the water's 

 edge, and may sometimes be partly submerged. The belt of 

 sedges is often ten to twenty yards in width and may in favorable 

 situations be much wider. In a filled-in swamp sedges may cover 

 an area many acres in extent. 



