LIMAX. 



59 



the right posterior margin of the mantle, large. Anal orifi<;e 

 immediately adjacent to, but a little above and anterior to the 

 respiratory orifice, with a cleft or fissure through the mantle 



Fig. 99. 



Fip. 100. 



Liw.ax fiavus. 



from the orifice to its edge. Orifice of organs of generation 

 near, and immediately behind, the right superior eye-peduncle. 



Testaceous rudiment thin, concentrical, not spiral, 

 covered above with a thin and transparent perios- 

 traca, below smooth. 



Jaw without ribs or marginal denticulations, its 

 concave margin with a median projection. 



Lingual membrane very broad, teeth long, central tricuspid, 

 laterals of the same shape, but tricuspid ; uncini aculeate. 



Fig. 101. 



Lingual dentition of Limax Jlavus. 



Species of Limax have been found in every quarter of the 

 globe, but they may be said to belong rather to the more temper- 

 ate regions. In North America they are less common in the 

 tertiary portions of the southern States, but are found abundantly 

 in the middle and northern States and in the British possessions. 

 Specimens were collected by Mr. Kennicott as far north as the 

 junction of the Yukron and Porcupine Rivers in Russian Ame- 

 rica. The Pacific States also are inhabited by several undescribed 

 species. The cellars and gardens of the cities of the Atlantic 



