APPENDIX. No. II. 401 



all the impressions of the shell, and the suckers on all the arms 

 were diminished in size, as if from pressure. 



Explanation of Plate XII. 



Fig. 1. Ocythoe Cranchii sitting within the shell. 

 Fiff. 2. The animal without the shell. 

 Fig. 3. One completely retracted within the shell. 

 Fig. 4. Ditto taken out of the shell showing the impressions 

 of the shell on the body. 



Fig. 5. Left superior arm (common appearance) magnified. 

 Fig. 6. Right superior arm (variety) magnified. 



3 F 



