16 THE BLOWFLIES OF NortH AMERICA 
time the pains in the region of the frontal cavity at the base 
of the nose and below the eye extending to the right ear increased. 
At times the pain was more severe than at others but it never 
entirely left. This pain was described as preventing hearing 
and breathing and so excruciating that at intervals day and night 
her cries could be heard at a great distance from the house. 
Tuesday evening blood mucus began to run from the right nostril 
which was somewhat swollen, the swelling extending by Friday 
over the whole front side of her face. On this day, the fifth of 
the complaint, four large maggots dropped out of the right 
nostril. When I was first called to the patient, Monday, October 
4, only the right lip and nostril were swollen, the acrid discharge 
having somewhat blistered the lip below. After each discharge, 
maggots dropped from the nostril, until the twelfth day, 140 
or more maggots having escaped. The majority of the maggots 
were three-fourths of an inch in length, there being only a few 
which seemed a line or two shorter; they were of a yellow hue, 
conical shape, and having attached to one end, two horn-like 
hooks. On Monday, September 18, 1882, I saw a patient in the 
same neighborhood suffering from the same malady. At that 
time, 280 maggots had been discharged and at the close of the 
illness, over 300. There was a swelling on each side of the nose 
with a small opening to each. I lanced these openings and more 
maggots came out.”’ 
Intestinal Myiasis. Blowfly larvae may be the cause of 
intestinal myiasis in man. Such cases are most often caused 
by tertiary flies and may usually be considered accidental. 
Larvae may hatch from eggs deposited by gravid females on 
meats or other foods intended for human consumption. Hoeppli 
and Watt (1933) working with species of Chrysomya and Lucila, 
and Desoil and Delhaye (1922) working with species of Calliphora 
noted that larvae of these genera were able to live in the human 
intestinal tract. According to Herms (1939) the presence of 
‘such larvae in the human intestinal tract is usually accompanied 
by dizziness and nausea followed by more or less abdominal 
pain. He stated that ‘‘diarrhea with discharge of blood may 
oceur as the result of injury to the intestinal mucosa by the 
larvae,’’ and ‘‘living and dead larvae are expelled with either 
the vomit or stool or both.’’ Herms and Gilbert (1933) reported 
upon a case of intestinal myiasis from which species of Calliphora, 
Phaenicia, and Sarcophaga were reared. Because of the peculiar 
recurrence of violent symptoms and the expulsion in vomit and 
stool of broods of very young larvae along with fully grown 
larvae they concluded that Parker (1922) might have been cor- 
