58 



SPOROZOA. 



consisting of several compact masses. Movement slow and 

 peristaltic. Gametocytes rounded or oval. Gametocysts 

 irregularly hemispherical, apposed to each other by their 

 flat surfaces. Sporocysts and sporozoites typical. 



Dimensions. — Trophozoite 40-80 /x in length, 12-30 /x in 

 width ; gametocysts 70-80 ju. in diameter. 



Habitat. — Seminal vesicles of Pheretima posthuma (L. 

 Vaill.) : Bengal, Calcutta. 



3. Monocystis lloidi Ghosh. 



■\Monocystis lloidi, Ghosh, 1923, p. 425. 

 Monocystis lloidi, Bhatia, 1929, p. 123. 



Trophozoites rounded or oval when young ; somewhat fusi- 

 form, about one-third longer than broad, when mature. 

 Anterior end more rounded than the posterior. Surface 

 smooth. Ectoplasm distinct and comparatively thick. Endo- 

 plasm finely granular, with scattered, coarse granules. 

 No distinct paramylon grains. Nucleus with a small eccentric 

 karyosome. Movement brisk and peristaltic. Gametocysts 

 spherical or oval. Sporocysts and sporozoites typical. 



Dimensions. — Trophozoite 100 ju. in length ; gametocysts 84 /x 

 in diameter. 



Habitat. — Seminal vesicles of Pheretima posthuma (L. 

 Vaill.) : Bengt^, Calcutta. Rare. 



4. Monocystis pheretimi Bhatia & Chatterjee. (Fig. 6.) 



■\Mo7wcystis pheretimi, Bhatia & Chatterjee, 1925, pp. 199-200^ 

 figs. 20, 21, 28, 29. 

 Monocystis pheretimi Bhatia, 1929, p. 123. 



Trophozoites variable in form, spherical, ovoid, eUipsoidal 



Fig. 6. — Monocystis pheretimi Bh. & Oh. (After Bhatia and Chatterjee.) 



