. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. A nihyomyiidcB 139 4 , with five grain doses of salol four times a day. The customary parasiticides yielded no marked benefit. At the time of the report the patient passed from four to fifty larvae per day, and was showiag some signs of improvement. The nausea had disappeared, her nervousness was less evident, and there was a slight gain in weight. The case was comphcated by various other disorders, but the symptoms given above seem to be in large part attributable to the myasis. There is
. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. A nihyomyiidcB 139 4 , with five grain doses of salol four times a day. The customary parasiticides yielded no marked benefit. At the time of the report the patient passed from four to fifty larvae per day, and was showiag some signs of improvement. The nausea had disappeared, her nervousness was less evident, and there was a slight gain in weight. The case was comphcated by various other disorders, but the symptoms given above seem to be in large part attributable to the myasis. There is nothing in the case to justify the assumption that larvce were continuously present, for years. It seems more reasonable to suppose that something in the habits of the patient favored repeated infestation. Nevertheless, a study of the various cases of intestinal myasis caused by these and other species of dipterous larvse seems to indi- cate that the normal life cycle may be con- siderably prolonged tmder the unusual conditions. The best authenticated cases of myasis of the urinary passage have been due to larvae of Fannia. Chevril (1909) collected and described twenty cases, of which seven seemed beyond doubt. One of these was that of a woman of fifty-five who stiffered from albuminuria, and urinated with much difficulty, and finally passed thirty to forty larvae of Fannia canicularis. It is probable that infestation usually occurs through eating partially decayed fruit or vege- tables on which the files have deposited their eggs. Wellman points out that the flies may deposit their eggs in or about the anus of persons using outside privies and Hewitt believes that this latter method of infection is probably the common one in the case of infants belonging to careless mothers. "Such infants are sometimes left about in an exposed and not very clean condition, in consequence of which flies are readily attracted to them and deposit their ; Muscinae—The larvae of th
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