HYMENOLEPIS NANA.
Synonyms: Tœnia murina, Tœnia nana, Tœnia œgyptica; Diplacanthus manus, Hymenolepis nana, Hymenolepis murina.The dwarf tapeworm was found in man for the first time by Bilharz, in Cairo, Egypt, in 1851. He recovered a "countless number" of them at a postmortem on a boy who had died of meningitis. In September, 1904, Ransom1 was able to collect from the literature 118 cases of Hymenolepis nana infection of man. The geographic distribution of these cases is as follows: Egypt, 3; England, 1; Italy, 75; Servia, 1; Russia, 3; Germany, 4; Siam, 1; Japan, 2; North America, 24; South America, 4. I have been unable to find any cases recorded in North America other than the above mentioned by Ransom.The 24 North American cases are distributed as follows:Hallock's cases were probably imported, as they occurred in soldiers who had returned from the Philippines just eight and nine