41 C» 



THYSANURA. 



l.ppisma sacchar-na. 

 i-3rd of an inch in length. 



Sea II. — With Scales. 



Lepisma saccharina (Linn.).—2Q. Magnified sketch 

 of ditto; 27. Magnified sketch of «Stale of ditto. 



An easy distinction between this genus and 

 Machilis (the only British members of this 

 section), is that Lepisma is not saltatorial, 

 Machilis is. This species is silvery white, 

 with a yellowish tinge about the antennas 

 and legs. Common not only in Britain, but 

 over the greater part of the Continent. 

 There is no other species in Britain. 



Machilis maritima {Leach). — 28. Magnified sketch 

 of ditto ; 29. Magnified sketch of scale. 



Brown, mottled, with bronze reflections. 

 Common on the rocky shores of England, Ireland, and France. 



Machilis maritima. 0.5 of an inch in lengfth. 



This and Machilis polypoda (a brown species, which is found 

 in woods and dry places) are the only two that have been found 

 in Britain. 



