9 6 



ON THE ORIGIN AND 



[CHAP 



ever possess vibratile cilia. There is, indeed, 

 one genus Lindia (Fig. 58) in which these cilise 

 are altogether absent, and which, though resembling 

 Macrobiotus in many respects, differs from that genus 

 in being entirely destitute of legs. I have never 

 met with it myself, but it is described by Dujardin, 

 who found it in a ditch near Paris, as being oblong. 



a 



9 



57, Larva of Cecidomyia (after Packard). 58, Lindia torulosa (after Dujardin). 



vermiform, divided into rings, and terminating pos- 

 teriorly in two short conical appendages. The jaws 

 are not unlike those of the larvae of Flies, and indeed 

 many naturalists meeting with such a creature would, 

 I am sure, regard it as a small Dipterous larva ; yet 



