:68 SPOROZOA. 



in which the sarcocyte is well developed. Movements of the 

 trophozoite very slow. Body not covered with hair. Nucleus 

 oval and situated in the posterior half of the body. 



Dimensions. — The trophozoite may attain a maximum 

 length of 126|u,, maximum width 52-5ju, ; nucleus 14-15-9ju, 

 in length and S-ll-S/x in width. Cysts and spores not 

 identified. 



Remarks. — R. mamillata differs from R. cognettii in being 

 more constant in form and in not exhibiting the changes 

 shown by the latter species. It differs from R. pilosa by its 

 constant form and by the complete absence of hair covering 

 the body. The relative dimensions of the trophozoite, 

 nucleus, and karyosome differ markedly from R. awatii, 

 which is found in the same host-species, the nucleus being 

 larger in trophozoites of corresponding size. 



The sperms of the host, sticking close together to the 

 epimerite, form a thick investment round it. The ectoplasm 

 is not thick, but the epicyte is fairly weU developed. The 

 endoplasm, with the contained granules, is moved about in the 

 interior of the body from pole to pole, Avithout affecting the 

 external form of the body. The nucleus generally Hes in the 

 posterior half of the body, rarely in the middle or the anterior 

 half ; it is distinctly oval, and contains a single spherical or 

 slightly oval karyosome, which is placed eccentrically. 



Habitat. — Seminal vesicles of Pheretima elongata (E. Parr.) : 

 Bombay, Bombay. 



3. FamUy STOMATOPHORID^E Bhatia, 1930. 



Trophozoites ovoid, spherical, cylindrical or cup-shaped, 

 "with an anterior sucker-like epimeritic organ ; soHtary. 

 Sporocysts navicular, with similar non-appendiculate and 

 truncated poles ; octozoic. 



The family includes seven genera (-yic^eBhatia, 1930), of which 

 only one is at present known from India. All the genera 

 are parasitic in various species of Pheretima only. 



Genus STOMATOPHORA Drzewecki, 1907, emend. Hesse, 

 1909, and Bhatia, 1924. 



Stomatophora, Drzewecki, 1907, pp. 218-46 ; Hesse, 1909, pp. 45, 

 161-87 ; Bhatia, 1924, pp. 481-512, pi. xxiii, figs. 1-31 ; Bhatia 

 & Setna, 1926, pp. 367-8 ; Reichenow, 1929, p. 887 ; Calkins, 

 1933, p. 560 ; Ray & Chatterjee, 1936, p. 345. 



Trophozoites ovoid or spherical. Anterior end provided 

 with a sucker-like epimeritic organ with or without a central 

 mucron. Sporocysts typical of the family. 



