184 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



June. 





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Biddulphia 











+ 

 + 















+ 

 + 

 + 





Rhizosolenia 











+ 



+ 

 + 















Coscinodiscus 























Gelatinous algae 







+ 





+ 















Ceratium tripos 

















+ 

 + 





Noctiluca 



+ 



+ 



+ 







+ 

















Pluteus 





+ 



+ 















Echinus pluteus 



























Spatangus pluteus 

























+ 





Pleurobrachia pileus 





+ 



+ 



+ 

 + 





+ 

 + 

 + 

 + 



+ 







+ 









Medusoid gonophores 













+ 

































+ 

 + 

 + 





+ 







+ 







+ 





















Larval polychaeta 









+ 

 + 























+ 



























+ 

















Idotea marina 











+ 

 + 

 + 

 + 

















Mysis stage of Crangon 







+ 















+ 

 + 

 + 













+ 



+ 

 + 

 + 



+ 

 + 

 + 

 + 

 + 

 + 

 + 





+ 

 + 











+ 

 + 





















































+ 



+ 

 + 

 + 

















+ 

 + 

 + 





+ 

 + 

 + 

 + 

 + 

 + 





















+ 













+ 





Acartia clausi 









































+ 

















































+ 





























+ 



















+ 

 + 







+ 









+ 























+ 





























+ 















+ 



+ 

 + 



































+ 



+ 





+ 









+ 













+ 

















+ 



+ 



+ 



20 







+ 

 + 



26 











+ 

















+ 

 11 









3 



2 



13 



11 













19 







