INVERTEBRATE FAUNA OF LAKE SUPERIOR. 



707 



•* See p. 702 in reference to the identification of this species. 



CoRRECTiox. — The statement, on page 649, that none of the females of Ponloporeki 

 Hoyi, taken in Lake Superior during August and September, were carrying eggs, is 

 incorrect. Three or four among several hundreds of specimens taken August 22 were 

 carrying eggs, and there may be a few in the same condition iu other lots; but, among 

 many thousands collected, certainly not one female iu a hundred was carrying eggs. 



