Two new species of Sarcocystis 

 from African Antelopes. 



By V. DOGIEL. 



During my voyage in British East Africa I investigated 

 the muscles of different African animals, viz. Hippotigris^ 

 PhacocJioerus and some antelopes for Sarcosporidia. And in- 

 deed, in the muscles of two species of antelopes I succeeded 

 in discovering numerous sacs of Sarcocystis. In the present 

 paper I intend to give a brief description of the species found 

 by me, and shall treat the structure of the ectoplasm in grea- 

 ter detail, as the fine structure of the latter in Sarcosporidia 

 is interpreted differently by the various authors. 



J had at my disposal the sacs of Sarcocystis taken from 

 muscles of the limbs (I have not got the youngest and oldest 

 stages, which are to be found in the muscles of the oesophagus), 

 and fixed by corrosive sublimate with acetic acid. I shall now 

 pass to the description of the two species found by me. 



1. Sarcocystis bubalis n. sp. 



This form was found in great quantities in the muscles 

 of the two specimens of Bubalis cookei investigated by me. 

 I have found the sacs of 5. bubalis embedded in muscle 

 fibres which are very thick in the antelope named. The length 

 of the sacs varied from 250 [x to 2 mm., wheareas their 

 width was 65-200 ^i. 



The whole interior of the sacs was uniformly filled with 

 spores which have the elongated and slightly bean-shaped 

 form characteristic for the spores of Sarcosporidia. The 

 length of the spores is about 10 |x. 



At one end of the spore a large light vacuole is plainly 

 visible. As I have already noticed, the arrangement of spores 



