AUSTRALASIAN ANTARCTIC EXPEDITION. 
12. Anterior antenna of male. -+ 84. 
13. Capitulum of tentacle, male. X 240. 
14. Inner branch, posterior antenna, male. X 240. 
15, 5 i - female. x 240. 
16. Copulatory organ, male. X 240. 
Chydorus macquariensis. 
17. Female, seen laterally. x 84. 
18. anterior antenna. X 240. 
2? 
19. Caudal lamina. x 440. 
