PLATE IV. 



Cellar Slug (Limax Flavus s. Variegatiis), 



Dissected so as to show its digestive, circulatory, respiratory, nervous, and 

 reproductive systems. 



The muscular envelope has been separated from the foot 

 proper along the left side^ and turned over to the right, together 

 with the shield-shaped mantle and the organs it overlies. The 

 buccal mass and nerve collar, together with the salivary glands, 

 have been displaced a little to the left, on which side of the animal's 

 body the stomach and bilobed liver have been fastened out, as the 

 generative apparatus has been upon the right. Some of the nerves, 

 muscles, and arteries have been cut away, but most of the organs 

 in the animaFs entire system have been displayed in this view. The 

 oesophagus and buccal mass have been pulled a little forward 

 through the nerve collar, and occupy much the same position 

 relatively to it as they do when in life the buccal mass and head is 

 thrust forward. The two first convolutions described by the intes- 

 tine have been uncoiled, and the intestine has thus been drawn as 

 takinff a much less sinuous course than it does in nature from its 

 commencement at the pylorus to the point where it comes into 

 relation with the dorsal integument and shield, and hooks round 

 the stem of the muscle which retracts the buccal mass and the 

 tentacles. The generative organs have been detached from their 

 normal connections, and are arranged on the right side of the 

 animaFs head. Their volume, as drawn here, is but small in 

 comparison with that which it attains in the breeding season. 

 The upper tentacles, together with the nerves which supply and 

 the muscles which retract them have been cut through, and turned 



