44 INVP^RTEBRATE ANIMALS. 



Group 130.— Family TEUTHIDiE. Calamaries and Squids. 



Tsv&ls (Aristotle). The shell is an internal horny pen. 



Loligo, Cranchia, Sep'wla. Estimated number of 



species : recent, 90 ; British, 10 ; fossil, 14. Lias, &c. 



IT Pariot-like horny beaks of Squids. Eyes of 



Cephalopods taken from Peruvian mummies. 



Upper Compartment. 



Pen of Squid four-and-a-half feet in length, 

 collected by Capt. Mortimer in the North 

 Atlantic. Animals of the group in spirits. 



Section OCTOPODA. arms, eight. 



Group 131.- Family OCTOPODID^ Poulpes. Octopus, 

 Eledone. Estimated number of species : recent, 58 ; 

 British, 1. 



U Dried Octopods, from the market at Constanti- 

 nople. 



upper Compartment. 

 Drawings, and preparations in spirits. 



Group 132.— Family ARGONAUTID^. Argonaut, Paper- 

 Nautilus. The beautiful shell of the female Argonaut is 

 secreted by the extremities of the dorsal arms, which are 

 disciform. The animal is not attached to the shell, but 

 sits in it, clasping the sides with its webbed arms. 



H Very large specimen of A. argo, and examples 

 of four other species. 



Upper Compartment. 

 Drawings of the female Argonaut with its shell. 

 Preparation in liquid of male Argonaut, shew- 

 ing the hectocotylised arm. 



