lOI 



VI. 

 GENUS ENDOLIMAX KUENEN & SWELLENGREBEL, 1917. 



'i'HiiRE is only one species belonging to this genus, namely : 



ENDOLIMAX NANA (WENYON & O'CONNOR, 1917) BRUG, 1918. 



.^ Entamoeba phagocytoides Gauducheau, 1908 {pro parte). 



Chlamydophrys stercorea Elmassian, 1909 {nee Cienkowski, 1876). 



f Entamoeba nipponica Koidzumi, 1909 {pro parte). 



"Small amoeba" Wenyon, 1912. 



f Vahlkampfia punctata (Dangeard) Chatton & Lalung-Bonnaire, 



19 1 2 {hro parte). 

 Entamoeba colt Werner, 1912 {pro parte). 

 f Vahlkampfia Whitmore, 1913. 

 Vahlkampfia Craig, 1913. 

 Entamoeba coli Akashi, 1913 {pro parte). 

 " Free-living amoebae " James, 1914 {pro parte). 

 Tetramitns mesnili Wenyon, 1915 {pro parte). 

 Amoeba lima.x Wenyon, 1916 {nee Dujardin, 1841). 

 Vahlkampfia Flu, 1916 {pro parte). 



" Non-pathogenic E. teiragena " Shimura, 1916 {pro patie). 

 Entamoeba nana Wenyon & O'Connor, 1917. 

 " Limax" Svvellengrebel & Mangkoe Winoto, 1917. 

 Entamoeba nana (Wenyon & O'Connor) Dobell & Jepps, 1917. 

 Endolima.x intestinalis Kuenen & Svvellengrebel, 1917. 

 Vahlkampfia nana (W^enyon & O'Connor) Brug, 1917. 

 " Limax amoeben " Flu, 1918. 



History and Nomenclature. 



Endolimax nana is so common an inhabitant of the human bowel 

 that it is remarkable that it escaped recognition for so long. This was 

 partly due, I believe, to its confusion with other amoebae — especially the 

 small coprozoic and easily cultivable organisms commonly, but incor- 

 rectly, called *^ Amoeba Umax." 



Gauducheau (1908) described a small amoeba which he named 

 Entamoeba phagocytoides and which he said lived " in the intestine of 

 man " — a statement since reiterated many times. He believed he had 

 b'.-en able to cultivate this species, but the forms in his cultures were 

 clearly free-living amoebae. It seems possible, therefore, that he culti- 

 vated these from stools containing E. nana, and wrongly assumed the 

 two organisms to be identical. His " E. phagocytoides" was probably, at 

 all events, a mixture of different organisms : for it was found in fresh 

 faeces, and isolated in cultures from stools, from liver abscess pus, and 

 from water. It has been regarded by Gauducheau as having a genetic 



