Vlt 



MOLL USOA —SYSTEMA TIC RE VIE W 



25 



I'lG. 36.— Female of Argonauta Argo (after V^rany). Seconil, third, and fourth pairs of arms 

 stretched dowinvards. re, Siphon; 6, eye; c, first pair of arms, covering with its sail d nearly the 

 whole shell e. 



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

 swimming position ; below, quiescent, watching for prey. 



