Acarus. APTERA. 2+5 



Genus VI. Acarus. 



Linn. Syft. Nat. page ioii. 



The infedts belonging to this genus have 

 eight feet. 



Two eyes placed on the fides of the 

 head, remote from one another. 



And two articulated tentacula in the form 

 of feet. 



Schaeffer obferves, that the head of the Acarus 

 is united to the thorax, in which it differs from 

 the foregoing genera belonging to this order ; 

 that its feet are made for running, its antennas, 

 (the tentacula of Linnaeus) articulated, and 

 made like feet, and that it has a pointed rof- 

 trum. 



Geoffroy and the lad-mentioned author have 

 given to the Acarus Longicornis^ Linn, No. 29, 

 and another, which Linnasus has fince placed 

 among the Phalangia (PhaL No. 4, Cancroides) 

 the generical name of Chelifer ; thefe differ from 

 the other Acari in the form of their antennae, 

 which are terminated by a kind of claw, refem- 

 bling that of a crab. They have given the fame 



Q^ 3 generical 



