TENNENT 



PLATE 5 



61-65. Toxopneustes 9 X HipponofQ 1 . Acetic acid. 

 G6-G9. Toxopneustes 9 X Hipponoetf. 1910. Ordinary sea 



water. 3 days. 



70-72. Toxopneustes 9 X Hipponogtf. HC1. 4 days. 

 73. Toxopneustes 9 XHipponoetf. 1910. Acetic acid. 



4 days. 



11 



74. Toxopneustes 9 ) 



5 days. 

 75-76 Toxopneustes 9 X Hipponoi 



water. 



77. Toxopneustes 9 X Hipponoe tf. 



78. Toxopneustes 9 X Hipponoe cj\ 



1910. Acetic acid. 

 <5\ Normal sea 



Acetic acid. 

 HC1. 



