Location: Unknown. Oocysts found in feces.
Geographic Distribution: India.
Prevalence: Unknown. Rao and Hiregaudar (1954) stated that its prevalence was great in calves in a dairy herd near Bombay.
Morphology: The oocysts measure 32 to 40 by 20 to 25 u with a mean of 37 by 22.4 u. They are ellipsoidal, tending toward the cylindrical, some with parallel sides and others with 1 side straight and the other slightly convex. The micropyle is 2 to 4 u in diameter, with a thickened wall around it. The oocyst wall is smooth, transparent, homogeneous, pale yellowish brown, 1 to 1.5 u thick. The sporocysts are 12 to 15 u long, oval, with 1 end a little more pointed than the other. An oocyst residuum is absent, but a sporocyst residuum is present. The sporozoites are 4 to 6 u long. The sporulation time is 2 to 3 days.