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PROTOZOOLOGY 



E. testudinis Hartmann. In intestine of turtles, Tesludo graeca, 

 T. argentina, T. calcarata and Terrapene Carolina. 



E. barreti (Taliaferro and Holmes) (Fig. 194, /). In the colon of 

 snapping turtle, Chelydra serpentina; trophozoites 14-23 (18)^ long. 

 Cultivation (Barret and Smith, 1924). 



E. terrapinae Sanders and Cleveland (Fig. 194, g, h). Trophozoites 

 10-15/x long; cysts 8-14/z in diameter, tetranucleate when mature; 



Fig. 194. a, a stained cyst of Entamoeba debliecki, X1330 (Hoare); 

 b, c, E. muris, X1330 (Wenrich) (b, with fusiform bacilli; c, with Tri- 

 trichomonas muris); d, e, stained trophozoite and cyst of E. citelli, X880 

 (Becker); f, a stained trophozoite of E. barreti, X1330 (Taliaferro and 

 Holmes); g, h, stained trophozoite and cyst of E. terrapinae, X1665 

 (Sanders and Cleveland); i, j, stained trophozoite and cyst of E. invadens, 

 X1045 (Geiman and Ratcliffe). 



upon excystment, the cyst content divides into four uninucleate 

 amoebulae; in the colon of Chrysemys elegans (Sanders and Cleve- 

 land, 1930). 



E. invadens Rodhain (Figs. 2, a, b; 194, i,j). Resembles E. histoly- 

 tica. Trophozoites measure 15.9/x in average diameter (9. 2-38. 6 /z by 

 9-30m); active locomotion; feed on leucocytes, liver cells, epithelial 

 cell debris, bacteria, etc.; nucleus simliar to that of E. histolytica. 

 Cysts 13. 9m (11-20/z) in diameter; 1-4 nuclei; glycogen vacuole; 

 chromatoid bodies acicular, rod-like or cylindrical. 



Hosts include various reptiles: Varanus salvator, V. varius, 

 Tiliqua scincoides, Pseudoboa clelia, Lampropeltis getulus, Ancis- 



