INVERTEBRATE FAUNA OF LAKE SUPERIOR. 



707 



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



Correction. — The statement, ou page 649, that none of the females of rontoporeia 

 Horji, taken iu Lake Superior during August and September, were carrying eggs, is 

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

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

 ivauy thousands collected, certainly not one female iu a hundred was carrying egg.s. 



