Rev. M. J. Berkeley on Helicolimax Lamarckii. 305 



13. Animal with shell of Truncatelta iruncatula, /3.; side view. 

 i 4. Ditto seen beneath as crawling up a glass ; taken when the muz- 

 zle is exserted. 



15. Ditto ditto. 



16. Ditto ditto, when the foot is extended in the act of drawing up 



the shell. 



17. Ditto seen from above ; a portion of the foot is also seen. 



18. The shell. 



13, 14, 15, 16 and 17 all more or less magnified. 



Art. XL. On tlie internal structure of Helicolimux 

 (Vitrina) Lamarckii. By the Rev. M. J. Bkrkelky. 



A FULL and minute account of the habits and external characters of 

 this interesting animal has already been given in the Zoological Journal 

 by my friend Mr. Lowe, who has furnished the specimens upon which 

 the following observations were made. But as he has not entered into 

 any anatomical details, some further account of the internal structure 

 may perhaps not be unacceptable, though, from the small size of most 

 of the specimens, that which I have to otfer is necessarily imperfect. . 



Of course, as I have nothing to add with respect to those characters 

 which Mr, Lowe has so accurately given, it would be superfluous to make 

 any mere repetition here. I shall therefore proceed at once to the 

 anatomy^ considering the present notes as a supplement to Mr. Lowe's 

 paper. 



The pulmonary cavity, is so similar to that of Helix, and the different 

 organs disposed so nearly in the same way, that it is needless to give any 

 figure or description. On the right side as usual is the rectum; on the 

 left behind, the pericardium with the heart vviihin, consisting of an 

 auricle and ventricle; and itself situated beneath the slime bag. The 

 membrane which forms the vault of the cavity, and over which the 



