ACARINA. 



035 



Fig. 290. — Farasites. Acarina. 



1, LoufiO, Iluman ; magnified 50 diameters. 2, Acarus domestmis, Cliposc- 

 Mite ; under surface. 3, Acarus Scabiei, Itch-Insect; magnified 350 dia- 

 meters. 4, Entozoon folliculorum, Grub from the human skin in various 

 stages of existence, from the egg upwards : magnified 350 diameters. (The 

 umall circles near represent the objects about the natural size.) 



