134 TAEASITIC PKOTOZOA FOUND IN S. AFIQCA. 



cattle, sheep and g-oats, and in the cnecum and colon of horses 

 in the TransYaal. Relatively few horses were available, and 

 most of them had died from horse-sickness. 



Isotricha was recorded last year from the rumen and 

 reticulum of a bull. It has been seen again in the corresponding- 

 organs of sheep, cattle and g'oats. Apparently both the species, 

 /. prostoma and I. intestinnlis, were observed, but the latter 

 occurred on few occasions and in small numbers. 



Sheep and cattle examined in the districts of Pretoria and 

 Johannesburg have also harboured the following Ciliata in 

 their rumen and reticulum: Dasytriclia rnminaniiUDi , Diplo- 

 dinium ecaudotnin and a species of Buef-'tchlia. The first-nanied 

 of these ciliates is placed in the genus Isotr-icha, as /. ruiniuan- 

 tivm, by Braune. Several varieties or formse of Diplodiiuuin 

 ecaudatum were seen, namely, candatum (with one caudal 

 spine), hicaudatum and tricaudatum. following the nomen- 

 clature of R. G. Sharp (1914).* The BvetscfiUa, probably 

 B. parva, were seen less frequently than the other ciliates men- 

 tioned. A few of these organisms reach the omasum and may 

 occasionally be found there. 



A Heterotrichous ciliate, which Braune (1913) considers 

 to be Enfodii)lu)i> hvrsa Stein, has often been observed by me 

 in the rumen and reticulum of cattle, sheep and goats. It is 

 very easily distorted by slight change in the temperature of 

 its environment. I regret that I have not yet been able to' 

 consult Stein's original description of the organism. The 

 various forms of this ciliate figured by Braune have all been 

 seen by me, as well as other forms, especially some showing 

 various contractions at the anterior end. Other allied 

 organisms, with spines varying in size and number, have also 

 been observed, and may be forms of Eiifoditiivm condafum 

 Stein. These organisms are most difhciilt to study, and do not 

 appear to have been adequately described or figured by previous 

 workers. Further illustrations of these Ciliata are needed. I 

 have been able to prepare some of these illustrations alreadv 

 from living material, and the observations are being continued. 



Blepharocorys vncinata was recorded last year from the 

 raecuni of a horse. It has been seen since in the cseca of most 

 of the other horses examined, and has been found, but less 

 frequently, in the colon. Another species, B. valvafa, has also 

 been seen in the caecum and colon of the horses ; it has been 

 found more frequently than B. vncinata in Ihe colon. 



In the caocum and small colon of four of tlie horses ;i few 

 Buetscldia postciliata were found. 



On one occasion a fresh specimen of T'-iadiniuni rnndafuni 

 was found in the small colon of a horse at Ondersteponrt. 



Cyclopostlnum hipalmaium has been observed in tlie 

 ctecum and colon of many of the horses before mentioned. The 

 infections were poor in each case. 



Regarding the remarks last year on Balanfidimn coJI in 

 ])igs, it may be added that two living specimens of the parasite 



* Univ. CaHfornia Publications in Zoology, xiii, p. 43. 



