200 



THE TELOSPORASIDA AND THE COCCIDIA PROPER 



and 100,000 oocysts are produced per 

 oocyst fed. 



Pathogenesis : According to Kheisin 

 (1947), this species is slightly if at all 

 pathogenic. He saw small white spots in 

 the cecum which were groups of developing 

 oocysts. 



EIMERIA ELONGATA 

 MAROTEL AND GUILHON, 1941 



Synonym : Eimeria neoleporis 

 Carvalho, 1942 (?). 



Host : Domestic rabbit. 



Location : Unknown, presumably in- 

 testine. 



Geographic Distribution : Europe 

 (France). 



Prevalence : Unknown. 



Morphology : The oocysts are slightly 

 greyish, elongate ellipsoidal with almost 

 straight sides, 35 to 40 by 17 to 20 fi . The 

 oocyst wall is thin. The micropyle is 

 broad and easily visible. An oocyst polar 

 granule and oocyst residuum are absent. 

 The sporocysts are elongate. A sporo- 

 cyst residuum is present, and almost as 

 long as the sporocysts. The sporulation 

 time is 4 days. 



Life Cycle : Unknown. 



Pathogenesis : Unknown. 



Remarks : Becker (1956) believed 

 that this species and E. neoleporis from 

 the cottontail might be the same, and I 

 agree. However, it is probably best to 

 retain both names pending further research. 



EIMERIA INTESTINALIS 

 KHEISIN, 1948 



Synonyms : Eimeria agnosia, 

 Eimeria piri/or)nis Gwelessiany and 

 Nadiradze, 1945; non E. piriformis Kotlan 

 and Pospesch, 1934. 



Host: Domestic rabbit. 



Location: Small intestine except 



anterior duodenum. 



Geographic Distribution : 

 (Hungary), USSR. 



Europe 



Prevalence : Relatively uncommon. 



Morphology : The oocysts are piri- 

 form, smooth, yellowish, 21 to 36 by 15 

 to 21/i. A micropyle is present. An 

 oocyst polar granule is absent. An oocyst 

 residuum is present. The sporulation 

 time is 1 to 2 days. Kheisin (1958) made 

 a cytochemical study of the oocysts and 

 endogenous stages of this species. 



Life Cycle : Pelle'rdy (1953) des- 

 cribed the life cycle of this species under 

 the name E. piriformis. The endogenous 

 stages occur above or sometimes beside 

 the nuclei of the epithelial cells of the 

 small intestine. There are at least 2 gen- 

 erations of merozoites. The prepatent 

 period is 9 days. 



Pathogenesis : According to Pellerdy 

 (1953, 1954), experimental infections with 

 this species cause more or less severe 

 intestinal catarrh and diarrhea, and may 

 kill young rabbits. At necropsy, edema 

 and greyish-white foci which may coalesce 

 to form a homogeneous, sticky, purulent 

 layer may be found in the intestine. 



EIMERIA MATSUBAYASHII 

 TSUNODA, 1952 



Host : Domestic rabbit. 



Location : Primarily ileum. 



Geographic Distribution : Japan. 



Prevalence : Unknown. 



Morphology : The oocysts are 

 broadly ovoid, 22 to 29 by 16 to 22 ^l with 

 a mean of 25 hy IS^i . A micropyle is 

 present. An oocyst residuum is present. 

 The presence or absence of an oocyst 

 polar granule and a sporocyst residuum 



