246 ORDER VIL Acarus. 



generical characters to the other Acari, as Lin- 

 nseus. 



The mouth of the Acarus is formed by a very 

 fmall roftrum enclofed in a flieath ; the anten- 

 nas are fliorter than the probofcis, except in one 

 fpecies, which is called, from that circumftance, 

 the Acarus Longicornis. The thorax is of the 

 fame fize with the head, and fo confounded with 

 the abdomen as not to be diftinguifhed but by 

 its hardnefs. The Acari live chiefly upoivother 

 animals, quadrupedes, birds and infects ; fome 

 of the laft-menrioned clafs are often quite co^ 

 vered with them ; others of thern live in, the 

 water, others upon trees, plants, &c. They are 

 oviparous, but their copulation and metarnor- 

 phofis have not yet been obferved. 



Gl 



MUS 



