OTHER FLIES CONCERNED IN MYIASIS 305 



were taken from the stool of a patient suffering from diarrhoea in 

 the Manchester General Infirmary and were sent to me for exami- 

 nation; they proved to be the eggs of C. erythrocephala. I am 

 unaware of any other records of the occurrence of the larvae of 

 these flies in the intestinal or urinary tracts. 



Muscina stabulans. 



Portchinsky (1913) mentions the case of a Russian peasant 

 which was brought to his notice in which, according to the 

 physician's report, the larvae were in the man's body from about 

 November 1909 to March 1910, causing during the whole period 

 great pain and sickness with vomiting. From January 1910 

 onwards his faeces contained blood. Finally, during the two days 

 following the injection of tannin, about 50 larvae of M. stabulans 

 were passed. From Portchinsky 's account it would appear that 

 this species is not infrequently the cause of intestinal myiasis. 



The Root Maggot Fly, Anthomyia radicum. 



The breeding habits of this % have already been discussed 

 (p. 214). Austen {I.e.) mentions a single record of the occurrence 

 of the larvae of this species in the faeces of a child which did not 

 display any symptoms of ill health. The larvae which were passed 

 in the faeces for some days soon disappeared after the administra- 

 tion of castor oil. 



The Cheese Maggot Fly, Piophila casei. 



Austen {I.e.) records three cases of the occurrence in the 

 human body of this fly. These larvae are the well known maggots 

 or " skippers " which are found in cheese. In 1896 a case was 

 reported in London of a woman of forty-nine years of age who 

 had been attending the throat hospital for eighteen months for 

 chronic pharyngitis, etc. For three weeks she noticed a profuse 

 watery discharge from the nose and experienced sharp pains in 

 the left frontal region. The discharge was never purulent. Various 

 lotions were used without success until dilute Mandl solution was 

 employed when four larvae of P. casei were discharged. Austen 

 has examined adult flies bred from a case of intestinal myiasis in 

 London, and Rondani records the expectoration of the larvae of 



H. H.-F. 20 



