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the transverse bands surround the stomach, all bemg 

 much too short. They are indistinctly granular in struc- 

 ture, and each contains one or two elongated nuclei. 



The lobules of the salivary gland are composed of the 

 dilated commencements of the ducts, lined with soft, 

 granular cells, which are oval in form, and contain a 

 round, granular nucleus with a minute nucleolus. The 

 basement membrane of the salivary ducts is amorphous. 

 The epithelial cells lining the trunks bear considerable 

 resemblance to those found in their follicular commence- 

 ment. Outside of the basement membrane, twine nar- 

 row, muscular fibres in various directions. They are 

 nucleated, and where the nuclei exist are wider than at 

 the intervening parts. 



The lobuli of the liver are composed of the rounded 

 commencement of the biliary ducts, and are lined with 

 polygonal cells, which become globular on the removal of 

 pressure. The hepatic cells contain a fine, granular 

 matter, fine and large oil-globules, and a round, nucleo- 

 lated nucleus. 



Chapter vi. — of the generative app^jiatus. 



All the terrestrial Gasteropoda under consideration are 

 monoecious, or hermaphroditic, though none are capable 

 of self impregnation. They are also all oviparous. 



LiMAX. The testicle is a round, or oval body, par- 

 tially concealed by the liver ; it is brown in color, and 



VOL. I. 21 



