. Manuel de l'entomologie médicale. Les insectes nuisibles ; les insectes porteurs de la maladie ; parasitologie médicale. 138 accidentellement ou de parasites facultatifs sur presque toute sa longueur a été marquée par des ecchymoses sanglantes. Les papilles sur ces endroits ont été détruits, bien que les murs n'étaient pas entièrement perforé. Dans l'annexe ont été retrouvés deux ou trois larves mortes. Alessandri (1910) a également montré que la larve ? Causer des lésions intestinales. Selon Graham-Smith, Austen (1912) a enregistré un cas de myasis du nez, a assisté à une décharge aqueuse profuse de plusieurs semaines et la douleur, en raison de la g

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. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. 138 Accidental or Facultative Parasites out almost its entire length was marked by bloody bruises. The papillae on these places were destroyed, although the walls were not entirely perforated. In the appendix were found two or three dead larvae. Alessandri (1910) has likewise shown that the larva? cause intestinal lesions. According to Graham-Smith, Austen (1912) has recorded a case of myasis of the nose, attended with a profuse watery discharge of several weeks duration and pain, due to the larvae of Piophila casei. Anthyom3riidae—The characteristic larvae of two species of Fannia { — Homalomyia or Anthomyia, in part) (fig. 101) are the most com- monly reported of dip- terous larvae causing intes- tinal myasis. Hewitt (1912) has presented a valuable study of the bio- nomics and of the larvae of these flies, a type of what is needed for all the species concerned in my- asis. We have seen two cases of their having been passed in stools, without having caused any special symptoms. In other instances their presence in the alimentary canal has given rise to symptoms vaguely described as those of tapeworm infestation, or helminthiasis. More specifically, they have been described as causing vertigo, severe headache, nausea and vomiting, severe abdominal pains, and in some instances, bloody diarrhoea. One of the most striking cases is that reported by Blankmeyer (1914), of a woman whose illness began fourteen years previously with nausea and vomiting. After several months of illness she began passing larvas and was compelled to resort to enemas. Three years previous to the report, she noticed frequent shooting pains in the rectal region and at times abdominal tenderness was marked. There was much mucus in the stools and she "experienced the sensation of larvas crawling in the intestine." Occipital headaches were marked, with remissions, and constipation becam

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