2) Alcohol, 70% 



a ) Chr omo dor i s 



b) Doris 



c) Natica josephinia 



3) Alcoholized seawater, 3% or alcohol added slowly. 



a) Amphineura 



b) Decapoda 



c) Doridium 



d) Fissurellidae 



e) Gastropods 



f) Haliotidae 



g) Lamellibranchia 

 h) Marionia 



i) Opisthobranichia 



j) Patellidae 



k) Placophora 



1) Pleurophyllidia 



m) Scaphander 



n) Scaphoda 



4) Chloral Hydrate, 0.1-0.2%. 



a) Aplysia depilans 



b) Aplysia limacina 



c) Aplysia punctata 



d) Amphinenra 



e) Decapods 



f) Gymnosomata 



g) Octopoda 

 h) Scaphopoda 



5) Chloroform added slowly. 



a) Lamellibranchiata 



6) Cocaine. 



a) Chr omo dor is 



b) Doris 



c) Gastropoda 



d) Heteropoda 



e) Lamellibranchia 



f ) Pleurobranchia Meckeli 



7) Freezing in a block of seawater and thawing in 

 10% formalin. 



a) Nudibranchiata 



8) Formalin, dilute. Add a few drops and double 

 the quantity each time they are added. 



a) Nudibranchiata 



9) Glycerin, 20 parts? 70% alcohol, 40 parts; 

 seawater, 40 parts and place animals in as little 

 seawater as possible. 



a) Techtibranchiata 



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