ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
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in the cavity of the body in an insect. It is a holotrichous parasite, 
densely ciliated, with micronucleus lying in a depression of the macro- 
nucleus, with granular protoplasm containing, few basophil vacuoles. 
Thejnultiplication is effected by simple transverse fission into two equal 
parts. There are hemispherical cysts, transparent and structureless, 
attached to the host’s cuticle, e.g. on the “ gills.” The description is 
based on material collected by Dr. W. A. Lamborn in*the Federated 
Malay States. J. A. T. 
Infusoria from Calcutta. — Ekendranath Ghosh {Bull. Carmichael 
Medical College Belgachia , 1921, 2, 6-17, 1 pi.). Records and descrip- 
tions of new species of Anoplophrya , Lionotus , Chlamydo don fop sis , 
Orthodon , Stegochilum , N yet other us, Parabursaria , Balantidiopsis , 
Balantidium and Stentor. J. A. T. 
Trichomonas augusta. — Isaac Ochoterena {Revista Mexicana 
Biologia , 1921, 1, 267-73, 7 figs.). Description of this species found in 
the rectum of many species of frogs. Reproduction is effected by karyo- 
kinetic division during phases of amoeboid activity. The nuclear mem- 
brane remains intact, and there is finally a median strangulation 
suggestive of amitotic division in Metazoa. J. A. T. 
Movement of Vorticella. — J. Belehradek {Comptes Rendus Soc. 
Biol., 1920, 83, 1362-3). The stalk of Vorticella consists of the 
myoneme and its enveloping sheath. It is often regarded as a prototype 
of a muscle-fibre, but it is a transformed flagellum. Its movements do 
not consist of a shortening and elongation of the myoneme, but of a 
brusque spiral rotation, in the course of which the body of the animal 
likewise rotates. J. A. T. 
Infection of Chimpanzee with Malaria. — F. Mesnil and E. 
Roubaud {Ann. Inst. Pasteur, 1920, 34, 466-80, 1 pi.). A female 
chimpanzee kept for several years at the Pasteur Institute had a short 
but unmistakable attack of tertian malaria after an intravenous injection 
with Plasmodium vivax, but re-inoculation twenty days after the 
disappearance of the parasite had no result. A young male, recently 
imported, was similarly inoculated, but without infection. When 
human blood with crescents only or with crescents and young schizonts 
was injected there was no infection. The persistence of the crescents 
! in the circulating blood was observed for three days. Both chimpanzees 
were bitten by mosquitoes containing Plasmodium prsecox, but nothing 
happened. For the first time — namely, in the case first mentioned — 
human tertian malaria has been observed in an animal. The chimpanzee 
is at the limit of resistance to a disease hitherto regarded as strictly 
peculiar to man. J. A. T. 
Generative Protoplasm in Gregarina cuneata. — B. D. Milojevic 
{Comptes Rendus Soc. Biol., 1921, 84, 99-100, 1 fig.). Immediately 
after encystation the two primary nuclei undergo characteristic changes ; 
the karyosome becomes pale, losing most of its chromatin, and the 
volume of the nucleus increases. Around it there appears an irregular 
zone of hyaline and very dense protoplasm — the generative protoplasm. 
