TENNENT 



PLATE 2 



18. Toxopneustes 9 X Moira 6\ Half-skeleton. 60 hours. 



19. Toxopneustes 9 X Moira tf. Pluteus and skeleton. 



6 days. 



20. Toxopneustes $ X Moira (J 1 . Pluteus. Free hand. 



15 days. 



21. Toxopneustes 9 XMellitatf. Skeleton. 48 hours. 



22. Arbacia 9 X Mellita cT. 48 hours. 



23. Mellita 9 X Moira, <j\ 36 hours. 



24. Moira 9 X Toxopneustes <3\ 36 hours. 

 25-26. Moira 9 X Toxopneustes c\ 36 hours. 



27. Toxopneustes 9 X Hipponoe c?. 48 hours. 



28. Hipponoe' 9 X Toxopneustes <j\ 48 hours. 

 29-31. Toxopneustes 9 X Hipponoe &. NaOH. 



Fourth day. 



