346 



MASTIGOPHORA AND PROTOMONADINA 



Genus Enteromonas da Fonseca, 1915. 



Definition." — Embadomonadinse without a cytostome or trailing 

 flagellum and with three anterior flagella. 



Type and only Species— Enteromonas hominis da Fonseca, found 

 in Brazil. 



Enteromonas hominis da Fonseca, 1915. 



Definition.— Enteromonas with the characters of the genus. 

 Remarks,— This parasite was first found by da Fonseca in Brazil 

 in 1 91 5, and subsequently by Chalmers and Pekkola, in the 

 Anglo-Egyptian Sudan, in Europeans and 

 natives. 



Morphology.— The parasite is roundish or 

 oval, without a tail, and with a diameter 

 varying from 5-6 microns. The periplast is 

 not rigid, and encloses an endoplasm, often 

 with inclusions such as bacteria. Situate 

 anteriorly lies the protokaryon type of 

 nucleus, from which a rhizoplast runs to a 

 blepharoplast, from which three anterior 

 fiagella arise. 



Life-History. — Da Fonseca records longi- 

 tudinal division. 



Pathogenicity. — The flagellate probably 

 causes diarrhoea. 



Fig. 73. — Enteromonas 

 hominis da Fonseca, 

 1915- 



Genus Embadomonas Mackinnon, 1911. 



Synonym.' — Waskia Wenyon and O'Connor, 1916. 

 Definition.- — Embadomonadinse, with a cytostome and one 

 anterior and one posterior flagellum, and with a siderophilous, 

 often folded, cytostomic margin. 



Type Species. — Embadomonas agilis 

 Mackinnon, 1911. 



Other Species. — ^The type and the 

 other species may be recognized as 

 follows : — 



A. Habitat: intestine of Tricho- 

 pterous and Tipula 

 LarvcB in British Isles: — 

 {a) Cytostomic borders feebly 

 siderophilous, cytosto- 

 mic flagellum exceed- 

 ingly delicate and in- 

 conspicuous — ■ 

 Size: 4-11 x i'5-3 microns, 

 (i) Agilis. 



[b) Cytostomic borders markedly siderophilous, cytostomic 

 flagellum well developed. Size: 7-16 x 5-9 microns. 

 Cysts: 5-6 X4-5 microns. (2) Alexeieffi. 



Fig. 



74 . — Embadomonas 



MACKINNON, 1 91 1. 



agilis 



(After Mackinnon, from the 

 Quarterly Journal of Microscop- 

 ical Science.) 



Cysts: about 4x3 microns. 



