Injurious (o Man. 



31 



and looked as if the insects burrowed ; irritation was intense even 

 for days after the bite." 



p 1G . 14. — a tropical fowl mite (Liponyssus bursa, Berlese), occasionally 

 biting human beings. Much enlarged. 



Liponyssus bursa has also been found biting human beings 

 at Cremorne, Sydney. Dr. Burton Cleland gives the following 



I'M 



Fig. 15. — Liponyssus bacoti, Hirst. An acarine parasite of the brown rat, 

 biting human beings in Australia. Dorsal and ventral aspects. 



