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EXPLANATION OF THE PLATES. 



PLATE XXIX. 



FIG Daphnia magna, Straus. 



1. Adult female, viewed from left side (antennae not fully drawn). 

 la. Rostral part of head (with antennula). 

 16. Tail-piece. 



Daphnia dolichocephala, G. O. Sars. 

 '2. Adult female, lateral view. 

 2a. Rostral part of head, with antennula. 

 26. Tail-piece. 



Daphnia hodgsoni, n. sp. 

 3. Adult female of the earlier generations, lateral view (antennae not fully 



drawn) . 



3a. Rostral part of head, with antennula. 

 36. Tail-piece. 



PLATE XXX. 



Daphnia coronata, n. sp. 



1. Ephippial female, lateral view. 



la. Another female without ephippium, dorsal view. 



Ib. Occipital part of head. 



Ic. Rostral part of head, with antennula. 



Id. Tail-piece. 



le. Extremity of same, more highly magnified. 



If. Anterior part of body of an adult male, lateral view (antenna omitted). 



Daphnia thomsoni, G. O. Sars. 



2. Adult female of the earlier generations, lateral view. 

 2a. Rostral part of head, with antennula. 



26. Tail-piece. 



2c. Extremity of same, more highly magnified. 



PLATE XXXI. 



Daphnia propinqua, G. O. Sars. 

 1. Adult female, lateral view, 

 la. Frontal part of head. 

 16. Tail-piece. 



