210 THE CLUSTER FLV AND .\rUSCINA STABULANS 



Fannia canicularis. The relation of this species to intestinal 

 myiasis is referred to later. 



It is interesting to note in conclusion that Harner (1910) 

 states that a remarkable point in regard to Muscina was the 

 frequency with which it was infested with parasites. These were 

 apparently Gamasid mites. In early June, out of 300 flies 

 examined, 40 specimens were infested. So closely together were 

 the parasites aggregated in some instances that no part of the fly's 

 abdomen was visible, the mites forming a kind of chain mail. 

 Berlese (1912) records the occurrence of the connuon mite A. nuis- 

 carum (see p. 158) on this species of fly, and it is not unlikely 

 that the aforementioned mites may have been the same species. 



