PARASITIC PROTOZOA FOUND IN S. AFRICA. 165 



mature cyst. The diameter of cysts measured was 15/x, 20/x, and 

 24fi. I propose the name Entamoeba equi for this parasite, with 

 the species differentiation as stated in this paragraph. 



A vervet monkey, Cercojrithecus lalandii, had a small amoeba 

 of the Entamoeba coli type present in the encysted condition in its 

 faeces. The cysts contained eight nuclei and were rather rare. 

 They are possibly to be identified with those of Entamoeba legeri 

 of Mathis*, 1913. The cysts were 17/x to 18,j. in diameter. 



Another Entamoeba, probably E . bovis of Liebetanz, has been 

 observed in extremely small numbers in the rumen of an ox. One 

 extended trophozoite was large and measured 50/x by 70/*. 



Mastigophora. 



The Mastigophora recorded previously by me have been seen 

 again. In addition, the following Flagellates may be recorded for 

 the first time in South Africa. 



A Bodo, possibly a new species, was observed in the rumen 

 and reticulum of oxen and sheep in Johannesburg. It possesses 

 a kinetic nucleus or parabasal body, and on that account would 

 formerly have been placed in the genus Prowazekia. Rounded, 

 oval, conical and sausage-shaped forms occurred. The active 

 elongate forms were 10/x to 15^. by 5u to 6fi. The rounded forms 

 were about 8 fi in diameter and cysts measured 7p to 8p by 5 p. For 

 purposes of reference this organism may receive a new specific name 

 and be called Bodo ruminant ium, though it may turn out to be a 

 coprozoic form. A Bodo was recorded by me last year from the 

 rumen of sheep. 



A Trichomonas has been observed very rarely and in very small 

 numbers in the intestine and faeces of two horses. A fresh speci- 

 men outlined with the camera lucida measured 11 p by 6^. This 

 form, for the purpose of distinctive reference, may receive a new 

 specific name and be called Trichomonas equi. 



Large rounded uni- and bi-flagellates, apparently large speci- 

 mens of the Monas communis described by Braunef (1913), which 

 probably includes the Sphaeromonas communis var. maxima and 

 minima of Liebetanz, were found by me in the rumen and reti- 

 culum of sheep in Johannesburg. They measured 14 p to 17 p in 

 diameter of body. The flagellates are active, and the uniflagellate 

 forms often have the flagellum wrapped round the body, and when 

 it uncoils a jerky movement results. The biflagellate forms are in 

 process of fission. Monads of similar size occur in the ox in the 

 same situations. 



Two apparently new forms of Giardia (Lamblia) have been 

 found by me in my examinations of ■post-mortem material, namely, 

 one in the rumen and duodenum of an ox and another in the large 

 colon of a horse. The animals died in the districts of Johannes- 

 burg and Pretoria respectively. The parasites were extremely few 

 in number in each case, and observations on them were limited 



* Bull. Soc. Med. Chirurgv Indo Chine, IV, pp. 3SS-410. 

 t Arch. f. Protistenkun.de, XXXII, pp. 111-170. 



