1106 Wisconsin Academy of Sciences, Arts, and Letters. 



planations are required as it has been thoroughly discussed 

 elsewhere. 



1853 

 1860 

 1863 



1868 

 1878 



1883 

 1883 

 1888 

 1891 

 1891 

 1892 

 1893 

 1893 

 1895. 

 1895 

 1901 



CYCLOPS AEQUOREUS Fischer. 



Cyclops magniceps Lilljeborg. 



aequoreus Fischer, p. 654, pi. XX, figs. 26-29. 

 Claus, p. 103. 



Brady, p. 128, pi. IV, figs. 9-16. 

 Brady, p. 119, pi. XIX, figs. 8-10; pi. XXI, figs. 

 10-17. 

 Dumasti Joly, p. 120, figs. 1-8. 



aequoreus G. M. Thompson, p. 97, pi. XI, figs. 16-18. 

 Dumasti Richard, p. 67. 

 aequoreus Blanchard and Richard, p. 515. 

 Brady, p. 26, pi. X, fig. 1. 

 " Lande, p. 173. 



Hemicy clops aequoreus Claus, p. 348, pi. Ill, figs. 11-17. 

 Cyclops aequoreus Scott, p. 74. 



Herrick, p. 122, pi. XXIII, fig. 5. 



Scott, p. 33. 



Lilljeborg, p. 102, pi. VI, figs. 17-19. 



Cyclops aequoreus was first recognized in our fauna by Her- 

 rick. It is an inhabitant of brackish water. It has never 

 appeared in any of my collections, but Mr. E. Foster tells 

 me that he has collected it in Lake Ponchartrain and connect- 

 ing waters. It seems likely that further collections in brack- 

 ish waters will show that this is not an uncommon form. It 

 is readily recognized by the six segmented antennae of the 

 female and the peculiar form of the fifth foot. 



