23 Genitalia and Lingual 



Amalia from Los Angeles. His species had about 48 teeth 

 iu each row, 16 being laterals, the balance marginals, a dif- 

 ference of arrangement which may fairly be considered to 

 show a specific difference between his specimens and the San 

 Francisco form, though his discovery leads us to consider 

 Amalia as native to California. 



Limax maximus, Linu. 



I have also reexamined the lingual of this species from 

 specimens collected in Newport, R. I. (see my edition of 

 Gould's Invertebrata of Mass., p. 407, fig. 669) and find it 

 to agree with the descriptions and figures of Lehmann and 

 Heynemann. I am preparing an exhaustive paper on the 

 dentition of our land shells, in which more particular de- 

 scriptions of the dentition of all our species will be given. 

 I will here say, however, that in the specimen examined by 

 me the bifurcation of the marginals commences nearer the 

 median line than is described by Heynemann. There are 

 but twelve marginals without bifurcation in my specimen, 

 that is, the bifurcation commences at about the thirtieth tooth 

 froni the central line, Heynemann gives the commencement 

 of the bifurcation at the sixty-fifth tooth. There are 76-1-76 

 teeth. 



Limax campestris, Biuney. 



To complete the series of North American Limaces, I 

 subjoin a summary of the characters of this species, the only 

 one now known to be native to eastern North America. 

 There are 36-1-36 teeth, 11 being perfect laterals, and 25 

 being marginals. Of the latter about one-half are bifid. 

 The centrals and laterals are of the same type as in L. 

 agrestis. 



Judging from dentition alone, L. maximus and Jlaviis 

 would be placed in Heynemannia, a subgenus of Limax; 

 agrestis in s. g. Agriolimax; camj)est?'is in s. g. Malacoli- 

 max; while Hewstoni would be in the genus Amalia. (See 

 Heynemann, Nachr. Mai. Gesell., H, 163.) 



