MOLLUSC A SYSTEMATIC REVIEW 



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FIG. 36. Female of Argonauta Argo (after Verany). Second, third, and fourth pairs of arms 

 stretched downwards, a, Siphon ; b, eye ; c, first pair of arms, covering with its sail d nearly the 

 whole shell e. 









FIG. 37. Octopus vulgaris, after Merculiano (in "A< 

 swimming position ; below, quiescent, watching for prey. 



itanum"). Above, in 



