1052 PATHOGENIC PROTOZOA 



species of importance to physicians are Entamoeba liistolytica, En- 

 tamceba coli and Entamceba gingivalis. 



Leidy of Philadelphia established the genus endamceba which may 

 possibly be closely related to or identical with the genus entamocba, 

 for the large amoeba which is parasitic in the cockroach, and called 

 it Endamceba blattce; this genus presents ; some points of resemblance 

 to those present in man, but its life history has not been sufficiently 

 studied by our present methods and the merging of the two at this 

 period seems scarcely justifiable. 



The nomenclature of the human parasitic entamoebae is shown 

 in the following table which has been taken from Dobell (1919) : 



SYNOPSIS OF GENERA AND SPECIES OF AMCEB.^E LIVING IN 



j MAN 



Genus I. ENTAMCEBA (Casagrandi and Barbagallo, 1895. 



(nee Endamoeba Leidy, 1879.) 

 Synonyms : 



Poneramceba Liihe, 1908. 



j Chatton and Lalung-Bonnaire, 1912. 

 Loschia [ 



Proctambceba Alexeieff, 1912 



(Amoeba (pro parte), Endamceba, Entameba, Endameba, En-, 

 tamoba, Auctt.) 



Type: E. coli (Grassi) Casagrandi and Barbagallo. 



Species in Man: E. coli (Grassi) Casagrandi and Barbagallo. 

 E. Jiistolytica Schaudinn (emend. Walker). 

 E. gingivalis (Gros) Brumpt. 



Genus II. ENDOLIMAX Kuenen and Swellengrebel, 1917. 



Only species, hence type: E. nana (Wenyon and O'Connor) 

 Brug. 



Genus III. IODAMCEBA nov. gen. 



Only species, hence type: I. butschlii (Prowazek) Dobell. 



Genus IV. DIENTAM(EBA Jepps and Dobell, 1918. 



Only species, hence type: D. fragilis Jepps and Dobell, 



