346 Ann ah of the South African Museum. 



Daphnia tenuispina, n. sp. 



2. Adult female, lateral view. 

 2a. Frontal part of head. 



2b. Tail -piece. 



Simosa australiensis (Dana). 



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

 3a. Rostral part of head, with antennula. 



36. Tail-piece. 



PLATE XXXII. 

 Simosa vetuloid&s (Gr. O. Sars). 



1. Adult female, lateral view. 



la. Head of same, more highly magnified. 

 16. Tail. 



Simosa capensis (G. O. Sars). 



2. Adult female, lateral view. 

 2a. Frontal part of head. 



2b. Tail-piece. 



Scapholeberis kingi, G. O. Sars. 



3. Adult female, lateral view. 



3a. Head of same, more highly magnified (antennae omitted). 

 3b. Tail-piece. 



PLATE XXXIII. 

 Ceriodaphnia producta, n. sp. 



1. Adult female, lateral view. 



la. Head of same, more highly magnified (antennae omitted). 

 16. Tail. 



Ceriodaphnia reticulata (Jurine) var. minor, n. 



2. Adult female, lateral view (antennae not fully drawn). 

 2a. Frontal part of head. 



26. Tail-piece. 



Ceriodaphnia quadrangula (Miiller), var. 



3. Adult female, lateral view. 

 3a. Frontal part of head. 



3b. Tail-piece. 



3c. Posterior protuberance of shell. 



3d. Male antenmvlae. 



PLATE XXXIV. 

 Ceriodaphnia duliia, Richard. 



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

 la. Head of same, without the antennae. 



Ib. Tail. 



Ceriodaphnia laticaudata, P. E. Miiller. 



2. Adult female, lateral view. 

 2a. Frontal part of head. 



2b. Tail. 



