24 Genitalia and Lingual 



Limax Weinlandi, Heynemann (Mall. Blatt., X, 212), I 

 do not know. The figure given by Heynemann (1. c. pi. ii, 

 fig. 1) of its dentition does not agree with that of L. cam- 

 pestris. 



Limax campestris differs widely in its genitalia from Limax 

 agrestis, as will be seen by Leidy's figures in Terr. Moll. U. 

 S., I, pi. ii, figs. 6, 8. 



Zonites capnodes,* W. G. Binney. 

 Tennessee. 



Jaw as usual in the genus. 



Lingual membrane broad, with numerous rows of about G6-1-6G teeth. 

 Centrals long, with a long, slender, median cusp, reaching the base of 

 attachment and bearing a long, slender point projecting beyond it. Side 

 cusps subobsolete, but represented by the cutting points, which are 

 greatly developed, triangular, stretching beyond the sides of the base of 

 attachment. Lateral teeth of same type as centrals, but bicuspid ; there 

 are about nine perfect laterals. Marginals aculeate, as usual in the 

 genus. 



I have not been able to observe the complete genital sys- 

 tem of the species. The penis has the same arrangement as 

 in Z. Icevig'atus. The external orifice is quite under the 

 edge of the mantle. 



In the Land Molluskeu of the "Archip. der Philippinen" 

 (p. 78, pi. iii, fig. 27 ; pi. v, tig. 21), Semper describes and 

 figures the genital system, jaw and lingual dentition, which 

 he refers to Z. lucubratus, Say. The specimen examined by 

 him was from Tennessee. It is difficult to decide from what 

 species Semper drew his description. It certainly was not 

 the true lucubratus, which is a Mexican species. A com- 

 parison of mv descriptions and figures of laevigatas, inor- 

 natus, fuliginosus and friabilis shows that neither of those 

 species could have been before Semper. His description of 

 the lingual membrane would better apply to capnodes. I 

 have not been able to examine the whole of the genital 

 system to see how nearly that also agrees with his figures. 



* Formerly erroneously spelt Kopnodes. 



