BABESIA. 317 



•261. Babesia ninense (Yakimojff). (Fig. 156.) 



Piroplasma ninense, Yakimoff, 1909, pp. 472—7, 1 pi. 

 ^Nuttallia ninense, Sinton, 1922, pp. 359—63, pis. xxvi, xxvii. 

 Babesia ninense, Wenyon, 1926, p. 1358. 

 Nuttallia ninense, Reichenow, 1929, p. 1039. 



Parasites occur in the red blood-cells, usually one in a cell, 

 occasionally more. Stained with Giemsa's stain the cytoplasm 

 is blue and the nucleus a deep carmine-red. The cytoplasm 

 is condensed and deeply stained at the periphery, with usually 

 a hghter area in the neighbourhood of the nucleus. Cyi;o- 

 plasm is voluminous as compared with the nucleus, which is 

 a soHd mass of chromatin, usually round, but elongated in 

 dividing forms, and is usually peripheral, rarely central. The 

 intracellular parasites may be ring-shaped, oval or elongate 

 rod-like in form. The oval or oat-shaped form is the common 

 type in division rosettes. Division rosettes consisting of four 

 small parasites found in smears from blood, spleen, and bone- 

 marrow. Cross-form of division also met with. 



ABC D E 



Fig. 156. — Babesia ninense (Yakimoff). (xc. 2500.) (After Sinton.) 



Dimensions. — Intracellular parasite, small form 0-7-1 /x, 

 large form 2-3^ in length. 



Habitat. — Red blood- corpuscles in smears from the blood, 

 Uver, spleen, and bone-marrow of the hedgehog, Erinaceus sp. : 

 N.W.F. Province, Kohat. 



262. Babesia sergenti Wenyon. (Fig. 157.) 



Piroplasma ovis (part), Ratz, 1913, pp. 194—200. 

 Theileria ovis, Yakimoff, 1916, p. 201. 



Oonderia ovis, Sergent, Parrot & Hilbert, 1922, pp. 789-92, 1 fig. 

 Piroplasma ovis, Velu, 1922, pp. 216-23. 

 Gonderia ovis, Lestoquard, 1924, pp. 122—8, 15 figs. 

 Babesia sergenti, Wenyon, 1926, pp. 1004, 1007-8, fig. 414, 1-4. 

 Babesia ovis, Reichenow, 1929, p. 1036. 

 ^Babesia sergenti, Krishna Iyer, 1933, p. 33. 



Morphologically the parasite corresponds very closely to 

 B. mutans. Similar rounded and bacillary forms occur. 

 Reproduction is by budding into two or four, so that the 

 ^characteristic cross-forms are produced. Nothing is known 

 of the method of transmission. 



