THE TELOSPORASIDA AND THE COCCIDIA PROPER 



195 



absence of a sporocyst residuum could 

 not be determined. 



Life Cycle ; Unknown. 



Pathogenesis : Unknown. 



EIMERIA UNIUNGULATI 

 GOUSSEFF, 1935 



Hosts : Horse, ass. 



Location : Unknown. Oocysts found 

 in feces. 



Geographic Distribution : USSR 

 (Azerbaidzhan, western RSFSR, Volga 

 region, Leningrad, Siberia, Tadzhikistan, 

 Uzbekistan). 



Prevalence : Gousseff (1935) found 

 this species in 0. 8% of 3355 horses, 3% 

 of 251 donkeys and 1% of 161 mules in 

 Russia. 



Morphology : The oocysts are oval 

 (ellipsoidal?), bright orange, and 15 to 

 24 by 12 to 17 )n . The oocyst wall is 

 double contoured. A micropyle, oocyst 

 residuum and polar granule are absent. 

 The sporocysts are 6 to 11 by 4 to 6 jn . 

 A sporocyst residuum is present. 



Life Cycle : Unknown. 



Pathogenesis: Unknown. 



Geographic Distribution : Europe 

 (England, Holland), North America (Ne- 

 braska, Quebec), Australia. 



Prevalence : This form is uncommon. 

 It was found by Brown and Stammers (1922) 

 and Wenyon (1923) in England, Nieschulz 

 (1924) in Holland, Skidmore and McGrath 

 (1933) in Nebraska and Bearup (1954) in a 

 dingo in Australia. Choquette and Gelinas 

 (1950) reported it in 10% of 155 dogs in 

 Quebec. 



Morphology : The oocysts are ovoid 

 or ellipsoidal, 17 to 45 by 11 to 28/i, 

 pink, red or colorless. The oocyst wall 

 is fairly thick, rough, and composed of 2 

 layers. A micropyle is present. The 

 sporocysts measure 9. 5 by 2. 5|u. The 

 sporulation time is 1 to 4 days. 



Remarks : It is far from certain that 

 this is a valid species. Wenyon (1926) 

 remarked that in many respects E. canis 

 resembles a mixture of E. stiedae and E. 

 perforans of the rabbit, and Goodrich 

 (1944) considered it to be a rabbit form 

 which the dogs had eaten. 



EIMERIA CATI 

 YAKIMOFF, 1933 



Hosts: Cat, dog. 



Location: Intestine. 



COCCIDIOSIS IN HORSES, 

 ASSES AND MULES 



Coccidiosis is such a rarity in horses, 

 asses and mules that little can be said 

 about it. The same measures which are 

 effective in cattle should control coccid- 

 iosis in equids. 



EIMERIA CANIS 

 WENYON, 1923 



Hosts :. Dog, cat, dingo. 



Location : Unknown. Oocysts found 

 in feces. 



Geographic Distribution : USSR. 



Prevalence : Rare. 



Morphology : The oocysts are ovoid 

 or spherical; the ovoid oocysts are 18 to 

 24 by 14 to 20 ji with a mean of 21 by 17 fj,; 

 the spherical oocysts are 16 to 22 jj. in 

 diameter with a mean of 18jj, . A micro- 

 pyle is absent. An oocyst polar granule 

 is present. An oocyst residuum is absent. 

 A sporocyst residuum is present. 



Life Cycle: Unknown. 



Pathogenesis: Unknown. 



