THE TELOSPORASIDA AND THE COCCIDIA PROPER 



173 



found it in 43% of 355 cattle in Wisconsin. 

 Supperer (1952) found it in 15% of 130 

 cattle in A-ustria. Yakimoff, Gousseff and 

 Rastegaieff (1932) found it in 23% of 126 

 oxen in Uzbekistan. Yakimoff (1933) found 

 it in 27% of 41 oxen, 6% of 17 zebus and 

 52% of 21 water buffaloes in Azerbaidzhan. 

 Marchenko (1937) found it in 16% of 137 

 cattle in the North Caucasus. Ruiz (1959) 

 found it in 3% of 100 adult cattle in the San 

 Jose, Costa Rica abattoir. 



Morphology : The oocysts have been 

 described by Becker and Frye (1929) and 

 Christensen (1941), among others. They 

 are 12 to 27 by 10 to 18 fi with a mean of 

 17 by 13|Lt. Their length- width ratio is 

 1 . to 1 . 6 with a mean of 1 . 30. They are 

 predominantly ellipsoidal, but vary in 

 shape from spherical to almost cylindri- 

 cal, the spherical and subspherical oocysts 

 occurring in the smaller size range. The 

 oocyst wall is thin, smooth, presumably 

 composed of a single layer, homogeneous, 

 transparent, colorless to pale lavender or 

 pale yellowish, and slightly thinner and 

 paler at one end, suggesting a possible 

 micropyie. A true micropyle is apparently 

 absent, however. An oocyst residuum and 

 polar granule are absent. A sporocyst 

 residuum is present. The sporocysts were 

 illustrated by Becker and Frye (1929) with- 

 out a Stieda body. The sporocysts (in the 

 zebu) measure 13 to 14 by 4. 5 fi according 

 to Yakimoff (1933). The sporozoites were 

 illustrated by Becker and Frye (1929) with- 

 out clear globules. 



The sporulation time is 2 to 3 days. 



Life Cycle : Unknown. The endogen- 

 ous stages occur in the epithelial cells of 

 the small intestine mucosa, according to 

 Boughton (1945). 



Pathogenesis : According to Boughton 

 (1945), this species often causes nonbloody 

 diarrhea in calves 1 to 3 months old. 



EIMERIA PELLITA 

 SUPPERER, 1952 



Hosts: Ox. 



Location : Unknown. Oocysts found 

 in feces. 



Geographic Distribution : Europe 

 (Austria). 



Prevalence : Supperer (1952) found 

 this species in 5% of 130 cattle in Austria. 



Morphology : This species has been 

 described by Supperer (1952). The oocysts 

 are 36 to 41 by 26 to 30)ii , ovoid, with a 

 flattened small end. There is a micropyle 

 at the small end. The oocyst wall is rel- 

 atively thick and dark brown. The surface 

 of the oocyst bears numerous small, uni- 

 formly distributed protuberances in the 

 form of small, blunt points which give the 

 wall a velvety appearance. An oocyst polar 

 granule and residuum are absent. The 

 sporocysts are elongate ovoid, 14 to 18 by 

 6 to 8|i, without a Stieda body. A sporo- 

 cyst residuum is present, usually compact. 

 The sporozoites lie lengthwise in sporo- 

 cysts, with 2 refractile globules. The 

 sporulation time is 10 to 12 days. 



It is possible that E. pellita is a syn- 

 onym of E. bukidnonensis . However, it 

 differs from it in the velvety appearance 

 described for its oocyst wall; the oocyst 

 wall of E. bukidnonensis has been des- 

 cribed as speckled, and as a matter of fact 

 Supperer' s drawing of E. pellita looks 

 speckled, too. Other differences are that 

 a sporocyst residuum has not been des- 

 cribed in E. bukidnonensis, while E. pellita 

 has a prominent one, and the sporocysts of 

 E. bukidnonensis are somewhat pointed at 

 one end (with a Stieda body?), while those 

 of E. pellita are not. 



Life Cycle : Unknown. 



Pathogenesis: Unknown. 



EIMERIA SUBSPHERICA 

 CHRISTENSEN, 1941 



Hosts : Ox. 



Location : Unknown. Oocysts found 

 in feces. 



