PARASITIC PKOTOZOA FOUND IX SOUTU AFUICA. 837 



Free merozoit.es and gametocytes, belonging to Einicria 

 arJoingi, have been seen in scrapings of the mucosa in and around 

 minute ulcers in the small intestine of young goats. A few 

 oocysts of E. arloi)igi, averaging 29^ by 20^, have been observed, 

 in the cooler months of the year, in adult goats, which seem 

 relatively unaffected thereby and serve as reservoirs of the 

 parasite. 



Sarcosporidia. — Further observations have been made during 

 1922 on the seasonal variation of Sarcosporidian spores in the 

 heart muscle of sheep, recorded* previously by me. Spores of 

 Sarcocystis tcnella from the apex of the ventricle of adult sheep, 

 killed in Johannesburg and Pretoria (Onderstepoort), were 

 examined as often as possible, and the results obtained during 

 ihe months of 1922 are now given in summary, the records for 

 the latter part of 1922, up to date of publication, being added 

 for completeness. Only a few observations were possible during 

 January, otherwise a fairly representative series of examinations, 

 as regards distribution through the various months of the j'ear, 

 were made. Altogether 97 sheep were examined, of which 51 

 were found to be infected with Sarcocystis. As before, it was 

 found that during the cold or winter months of June, July and 

 August in South Africa the Sarcosporidian sjiores were few. They 

 were fewest during June, and few during July and the first half 

 of August. Also, they were relatively few during the latter half 

 of May. Between the middle of May and the middle of August, 

 27 iminfected specimens of ventricle were found, out of 46 imin- 

 fected specimens for the year. An increase in numbers of spores 

 began to be apparent during the latter half of August, and the 

 increase during September was obvious; that is, an increase 

 occurred during the spring months in South Africa. Sarco- 

 sporidian spores were easily found and were relatively numerous 

 during October, November, December, probably January, 

 February, March and April, which are summer months in South 

 Africa. A definite decrease began to be apparent earlj' in iNlav. 

 On comparison it will be seen that the results herein recorded 

 are much tlie same as those obtained by me in 1919-20 and in 

 1921. 



Througli the kindness of Dr. G. W. Robertson, of the 

 Government Bacteriological Laboratory, Capetown, I have been 

 informed of the occurrence in South Africa of that interesting and 

 somewhat rare Haplosporidian, Rhinosporidiuyn hincahji Minchin 

 and Fantham,* 190."). Dr. Eobertson has very kindly given me 

 his only preparation of the organism. All the essential stages 

 described by the late Professor Minchin and myself are to be seen 

 in the section. The material was obtained from a growth the 

 size of a walnut on the posterior nares (back of the soft palate) 

 of an Indian mattress maker of Capetown. The growth was 

 removed by Dr. Elliott some ten yeai^ ago and sent to Dr. 



* This Journal, xviii, p. 167 ; xvii, pp. 132—133. 

 + Quart. Journ. Microsc. Set., xlix, pp. 521 — 532. 



