Notes on Lingual Dentition of Mollusoa. 



285 



An extremely instructive lingual, showing the merging of 

 laterals into uncini more completely than in any we have previ- 

 ously examined. 



Teranicella Floridana, Binney. 

 (Terr. Moll. U. S., II., p. 17.) On p. 306 of Land and Fresh- 

 water Shells of North America, Part I., we figured the lingual 



Lingual dentition of Veronicella Floridana, Bin. 



dentition of this species, as drawn by Mr. Morse. We now give 

 a figure drawn by Dr. Leidy for the " Terrestrial Mollusks of the 

 United States," but not included in that work. The details of 

 the separate teeth are much more accurately shown in the new 

 figure. It will be noticed that Dr. Leidy gives 58.1.58 teeth, 

 Mr. Morse 41.1.41, and our text (p. 304) 48.1.48. 



liiniax flaTUfii, Linn. 

 A figure of the lingual dentition of this species, drawn by Dr. 

 Leidy, is also given, for comparison with that of Mr. Morse, on 



Lingual dentition of Limax flavus, L. 



p. 63 of Land and Fresh-water Shells, Part I. Here also the num- 

 ber of teeth varies, as in Veronicella Floridana^ described above. 



