1889.] ON SOME FRESHWATER OSTRACODA AND COPEPODA. 79 



Plate VIII 



Figs 1—4, Diaptomus orientalis, Brady; male. 



Fig. 1. Adult male, from above; magnified 46 diameters. 

 , 2. Right prehensile anterior antenna; magnified 89 dia- 

 meters. 



„ 3. Last pair of legs, from the posterior face; magnified 

 120 diameters. 



» 4. Tail with adjoining part of anterior division of body, 

 from above; magnified 89 diameters. 

 Figs 5-12, Diaptomus Lumholtzi, n. s P . 

 Fig- 5. Adult female, from right side, with the anterior an- 

 tennae reflexed and 2 spermatophores adhering to the 

 genital orifice; magnified 46 diameters. 



» 6. Same, from above, with egg-bag and the anterior 

 antennae expanded. 



» 7. Terminal part of an antenna of 1st pair, magnified 

 80 diameters. 



» 8. Leg of last pair, magnified 160 diameters. 



* 9. Extremity of same leg, magnified 300 diameters. 



» 10. Tail with adjoining part of anterior division of body, 

 from above; magnified 110 diameters. 



» 11. Right prehensile anterior antenna of male (the basal 

 part is omitted); magnified 120 diameters. 



» 12. Last pair of legs of same, from posterior face; magni- 

 fied 160 diameters. 



