364 
Protozoa of Lizards , etc. 
Chilomastix sp. 
This is a small organism of the usual structure and in size corresponds with 
the two flagellates just mentioned. Its general appearance is shown in PL XX, 
Fig. 2, g. 
Entamoeba sp. 
The entamoeba is a large organism in its fully grown form (PL XX, Fig. 2 ,a). 
Smaller forms also occur and the general character of the organism is shown in 
Fig. 2, a-f. It will be noted that it bears a striking resemblance to Entamoeba 
coli and, like it, it feeds upon most of the contents of the lizard’s intestine, 
frequently ingesting the flagellates or their cysts (Fig. 2, b). It produces an 
eight-nuclear cyst which again is not distinguishable from that of the human 
Entamoeba coli either in size or characters. 
Of the lizard hosts mentioned above, judging from the contents of their 
intestines Chamaeleon vulgaris is entirely an insect feeder. This is true to a 
large extent of Lacerta agilis, though in it some vegetable matter is also pre¬ 
sent. Agama stellio feeds on insects but also largely on vegetable matter, as 
large pieces of leaves of plants and grass are to be found in the stomach. It 
is not surprising therefore that the two last named can infect themselves from 
vegetable matter contaminated by other infected lizards, while the chamaeleon 
only harboured the flagellate which it had probably acquired from some in¬ 
sect, which had in its turn taken up the flagellate from the faeces or rather 
cloacal mucus of the animal. 
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-(1911). Sur la nature des formations dites “Kvstes de Trichomonas intesiinalis .” 
G. R. Soc. Biol. lxxi. 296. 
—*— (1912). Sur quelques noms de genres des Flagelles qui doivent disparaitre de la 
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Bayon, H. (1915). Herpetomonidae found in Scatophaga hotlentota and Chamaeleon pumilus. 
Trans. Roy. Soc. South Africa, v. Part i. 61. 
Brumpt, E. (1912). Colite a Tetramitus mesnili (Wenyon, 1910) et oolite a Trichomonas in- 
testinalis Leuckart 1879. Blastocystis hominis n. sp. et formes voisines. Bull. Soc. 
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