34 INTESTINAL COCCIDIA OF MAN 



3. Methods of diagnosis. The motile forms of intestinal 

 flagellates may be seen moving about in the feces if material 

 is examined shortly after being passed by the patient. Both 

 motile forms and cysts may appear when treated according 

 to the methods described on page 22. 



Special Literature on Intestinal Flagellates 



CHALMERS, A. D., AND PEKKOLA, W. : Chilomastix mesnili. Annals 

 Trop. Med. and Parasit. Vol. 11, pp. 213-264, 1918. 



KOFOID, C. A., KORNHAUSER, S. I., AND SWEZY, O. I Criterions for 

 Distinguishing the Endamoeba of Amoebiasis from other 

 Organisms. Archives of Internal Medicine, Vol. 24, pp. 

 35-50, 1919. 



WENYON, C. M., AND O'CONNOR, F. W.: Human Intestinal Protozoa 

 in the Near East. 218 pp. London, 1917. 



D. Intestinal Coccidia of Man 



1. Classification. The Coccidia are Sporozoa of the sub- 

 class Telosporidia. They are as a rule parasitic in epithelial 

 cells of vertebrates and invertebrates, and reproduce by 

 both schizogony and sporogony. Among the best known 

 Coccidia are Coccidium schubergi of the centipede, Eimeria 

 stiedae of the rabbit, and E. avium in birds. Many other 

 species are known, but not in detail. 



2. Description of species. Prior to the year 1915 only 

 ten cases of coccidiosis in man had been reported and these 

 were supposed to be due to the same parasites as those found 

 in rabbits, cats and dogs. Recently many more cases have 

 been discovered and it seems probable that the human 

 coccidia are more numerous than heretofore suspected. 



a. Isospora hominis (Plate IV, Fig. 5). This species was 

 first described by Virchow in 1860. Wenyon and others 

 have recently reported over sixty cases of infection of soldiers 

 suffering from dysentery and enteritis and invalided to 

 England from Gallipoli. This species has also been recorded 



