MOLL use A —S YSTEMA TIC RE VIE W 



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Fig. 30.— Female of Argonauta Argo (after Verany). Second, third, and fourth pairs of arms 

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

 whole shell e. 







Fig. 37.— Octopus vulgaris, after Merculiano (in "Aquarium Neapolitanum"). 

 swimming position ; below, quiescent, watching for prey. 



