of very minute mealy fibres, having fomething like a jointed appearance, but fo 

 mi „ute as to make it almoft impoffible accurately to determine to nature- 

 There is no danger of its being confounded with any other fpeoes. 



A. C. atra, of its natural fize. 



B. Ditto, magnified 3. 



C. Ditto, magnified I. 



