COCCIDIA 425 



and the other drawn out into a short neck; 4 spores, each with 2 

 sporozoites. 



/. paludosa L. et H. (Fig. 192, m, n). In gut of Fulica atra and 

 Gallinula chloropus; oocysts 15m by llju; sporulation in 15 days. 



Genus Wenyonella Hoare. Oocysts with 4 spores, each with 4 

 sporozoites. One species. 



W. africana H. (Fig. 192, o, p). In small intestine of Boaedon 

 lineatus ("brown snake") in Uganda; oocysts ovoid or subspher- 

 ical, 18.5-19.2/x by 16-17. 6m; spores ovoid, 9.6At by 8^; sporula- 

 tion in 5-6 days. 



Genus Isospora Schneider. Oocyst produces 2 spores, each con- 

 taining 4 sporozoites. 



/. hominis (Railliet et Lucet) (7. belli Wenyon) (Fig. 192, q, r). 

 In human small intestine; oocysts 25-33yu by 12.5-16/x; spores 12- 

 14m by 7-9m; in one case of accidental infection, the victim suf- 

 fered 6 days later diarrhoea with abdominal discomfort which 

 lasted for 4 M^eeks, and recovered. 



I. higemina (Stiles) (Fig. 192, s). In gut of cat and dog; oocysts 

 10-14m by 7-9m. 



I. rivolta (Grassi) (Fig. 192, t). In gut of cat and dogs; oocysts 

 20-25M by 15-20^. 



I.felis Wenyon (Fig. 193, a). In cat and dog; oocysts 39-48^ by 

 26-37m. 



I. suis Blester, In swine faeces; oocysts subspherical, about 

 22.5m by 19.4m; sporulation in 4 days. 



I. lacazei Labbe. In small intestine of passarine birds (sparrows 

 blackbirds, finches, etc.); oocysts subspherical, 18.5-30m by 18- 

 29.2m; heavily infected sparrow shows definite symptoms; sporu- 

 lation in 4-5 days. 



I. lieberkuhni (Labbe) (Fig. 193, b). Oocyst about 40m long; in 

 kidney of frogs. 



Genus Cyclospora Schneider. Development similar to that of 

 Eimeria; oocyst with 2 spores, each with 2 sporozoites and cov- 

 ered by a bi- valve shell. 



C. caryolytica Schaudinn (Fig. 193, c). In gut of mole; sporo- 

 zoites enter and develop in the nuclei of gut epithelial cells; 

 oocyst oval, about 15m by 11.5m. 



Genus Dorisiella Ray. Zygote develops (without becoming 

 oocyst) into 2 spores, each with 8 sporozoites; macrogametocytes 

 migratory. 



