BEETLE MITES. 



215 



CASE 

 XIII. 



Genus Dam^eus {Koch). 



This genus has only one claw, as shown in the woodcuts, and 

 has ribs on the cephalothorax, as shown in the cut of the head of 

 Damseus auritus, on page 212. 



Damaeus auritus, leg of. Copied fioiu Nicolet. 



Claw of ditto. Copied from Nicolet. 



Nos. Dam^US geniculatus {Koch), (Acarus corticalis, De Gcer). — 6. Magnified 

 ^' ='' ^' sketch of embryo fresh from the egg of ditto ; 7. Magnified sketch of 



larva ; 8. Magnified sketch of perfect insect ; all copied from Nicolet's 



figures. 



Newly hatched larva of Damaeus geniculatus 

 Copied from Nicolet. 



Damaeus geniculatus, size of a i^iu's head. 

 Copied fiom Nicolet. 



The young differ very much in appearance from the mature 



