320 



PLASMODROMATA AND SARCODINA 



Loesehia williamsi Prowazek, 191 1. 

 This Loesehia is eonsidered to be identical withL. coH Loesch. 



Loesehia brasiliensis H. Baurepaire Aragao, 1912. 

 Resembles L. coli. Cysts 7 to 15 ^ in diameter, with eight nuclei and a 

 double contour membrane. The cysts are characterized by the presence of 

 a certain amount of siderophile substance which divides the cysts into two 

 portions of nearly equal size. 



Loesehia biitschlii Prowazek, 19 12. 

 Synonym. — Entamceba hhtschlii Prowazek 191 2. 



Found in a boy in the Caroline Islands. It varies in size from 10 to 24 // ; 

 coarse alveolar cytoplasm; nucleus vesicular; round karyosome and centriole; 

 cysts roundish, said to differ from those of L. coli. 



Loesehia mortinatalium Smith and Weidman, 1910. 



Synonym. — Endmitceha mortinatalium Smith and Weidman, 1910, 

 and perhaps Amoeba pulmonalis Artault, 1898. 



Definition. — Loesciiia of large size, 22-38 x 20-25 microns, with 

 nucleus 10 microns in diameter, with well-defined membrane, large 

 karyosome, and occasionally a centriole. 



Remarks. — Somewhere about 1890 Ribbert found amoebae in the 

 kidneys and parotid glands of infants. In 1898 Artault observed 

 amoebae with a nucleus and a vacuole in a lung cavity. Brumpt 

 has seen similar amoebae and R. Blanchard has found some in the 

 lungs of sheep, which may or may not be the same as the' Entamceba 

 ovis Swellengrebel, 1914, found in the gut of sheep. This latter 

 measures 12-14 x 11-12 microns. Its cysts are 8 microns in 

 diameter, uninucleate, with a glycogen vacuole. In 1904 Jesionek 

 and Kiolemengolou found amoebae in the kidneys, liver, and lungs 

 of an eight months syphilitic foetus. In 1910 Smith and Weidman 

 found an amoeba in the kidneys, liver, and lungs of stillborn full- 

 term foetus, and in 1914 they found their L. mortinatalium again in 

 the lungs of a two- months-old child which was syphilitic and died of 

 pneumonia. Atkey and Chalmers have observed amoebae in the 

 sputum and in the lungs of a case of pneumonia in the Anglo- 

 Egyptian Sudan, unassociated with any known history of dysentery, 

 which they thought were possibly L. histolytica. Time must show 

 what these amoebae really are. 



Loesehia minutissima Brug, 191 7. 

 Synonym. — E. minutissima Brug, 191 7. 



A very small amoeba, 4-11x4-8 microns. Usually 6-5-7x5-6 

 microns. 



Loesehia tenuis Kuenen and Swellengrebel, 1917. 



This amoeba, which was described as Entamceba tenuis, measures 

 6-9 microns in diameter, with cysts 6-8 microns, and one to, four 

 nucleated, is very like E. nana of Wenyon and O'Connor and the 

 E. minuta of Woodcock and Tenfold, which latter, however, is said 

 to be the same as E. histolytica. 



