EIMERIA, 189 



walled. Oocystic residuum absent. Sporocysts spindle- 

 shaped, with a small residue. Segmented and unsegmented 

 oocysts discharged from the host. Sporulation takes place 

 in 4 to 5 days. 



Dimensions. — ^Male gametocyte 20-24 /u, in diameter, female 

 gametocyte 23-27 /x by 16-18 /i ; oocysts 23-27 /x by 16-18 /x ; 

 sporocysts, 12-14|U, by 6-8 /x. 



Remarks. — Some of the oocysts showed sporozoites lying 

 free in the oocyst, formed without the formation of sporo- 

 blasts. This abnormahty has been previously described by 

 Wasielewski for E. steidse and Paracoccidium prevoti. 



Habitat. — Epithelial cells of the small intestine of the cobra, 

 Naja naja Linn. : Bengal, Sunderbans. 



118. Eimeria piscatori Ray & Das-Gupta. 



'\Eimeria piscatori, Ray & Das-Gupta, 1936 a, p. 345. 



Oocysts oval ; oocystic residuum present. Sporocysts 

 spindle-shaped. 



Dimensions. — Oocysts 29-31 /x in length by 22-5-24-5;[t 

 in breadth ; sporocysts 14 /x by 4-6 ju.. 



Habitat. — Rectum of the snake, Natrix piscator (Schneid.) : 

 Bengal, Calcutta. 



119. Eimeria sardinas (Thelohan). (Fig. 92.) 



Coccidium sardine, Thelohan, 1890, p. 1216 ; Labbe, 1899, p. 69 ; 

 Minchin, 1903, p. 340. 

 ■^Coccidium oxyspora, Dobell, 1919, p. 188, pi. viii, fig. 3. 



Eimeria oxyspora, Castellani& Chalmers, 1919, p. 476. 



Eimeria sp., Snijders, 1920, pp. 427-32. 



Eimeria snijdersi, Dobell, 1920, pp. 433—6. 



Eimeria oxyspora, Dobell, 1922, p. 1499, fig. 533 D ; Hegner & 

 Taliaferro, 1924, pp. 289, 290, 291 ; Craig, 1926, pp. 355-7, 

 fig. 64; Wenyon, 1926, pp. 851, 852, 861, figs. 350, 368; 

 Knowles, 1928, p. 361, fig. 83, 1. 



Eimeria snijdersi, Wenyon, 1926, p. 855 ; Knowles, 1928, p. 361, 

 fig. 83, 3. 



Eimeria sardine, Wenyon, 1926, pp. 851, 852, 861, figs. 350, 368 ; 

 Thomson & Robertson, 1926 a, pp. 282-3, 2 figs. ; 1926 b, 

 pp. 420-1 ; Knowles, 1928, p. 362, fig. 83, 3 ; Reichenow. 1929, 

 pp. 951-2, fig. 918 A ; Kudo, 1931, p. 274, fig. 113 m. 



Oocyst spherical, having a faintly yellow transparent 

 wall, composed of at least two distinct layers, and containing 

 four dizoic spores and a small oocystal residue. Sporocysts 

 long, sharply pointed at both ends, and possessing a tough 

 endospore and deciduous epispore, the remains of which give 

 the spore a frilled appearance. In each spore there are two 

 sporozoites, with pointed anterior and rounded posterior 

 ends, the latter containing the nucleus. 



