CLASSIFICATION AND NOMENCLATURE. 35 



a pathogenic species, the correct zoological names are 

 Entamceba coli and Entamoeba Mstolytica respec- 

 tively. 



In 1905, I suggested that as the name Amoebce 

 dysenteries had been given the pathogenic species by 

 Councilman and Lafleur, the name Mstolytica should 

 give way to dysenterice, but as Stiles has conclusively 

 shown that the latter is merely a synonym of coli, it 

 follows that it cannot be used to designate the patho- 

 genic amoeba, and therefore we must accept Schau- 

 dinn's name Entamoeba Mstolytica for one of the 

 species of amoebae causing amoebic dysentery. 



At the present time Schaudinn's classification has 

 been accepted by most medical investigators and 

 writers, and by all zoologists with whose work I am 

 acquainted. Musgrave and Clegg, almost alone of 

 those who have had an extensive experience with 

 amoebic dysentery, still decline to accept Schaudinn's 

 classification, although they state "we do not at all 

 question the multiplicity of both genera and species 

 of amoebae, both within and without the intestine of 

 man." They also adhere to the name Amoeba coU f 

 although, as Stiles has shown, the proper generic 

 term for the parasitic amoebae of man is Entamoeba. 



The exact zoological position of the parasitic 

 amoebae of man, together with their specific names, 

 may be tabulated as follows: 



