32 Prot 
XVIII. PROTOZOA. 
[1904] 
Protozoan plankton from : river Seim (tributary of the Dnieper), Zykoff 
(370) ; Lake Selig (GoV. Twer), id. (371); the Neva and Lake Ladoga, 
Skorikow (324). 
In plankton from the Volga (Woloshka), Astrophrya, a new Suctorian, 
AVERINTZEV (6). 
Plankton from : Turkestan, Protozoa, listed, v. Daday (79) ; River 
Murgab fMerv, Turkestan), Protozoa, Meissner (233). 
Protozoan plankton collected on a voyage to and from Bombay, Cleve 
(76). 
In plankton, Lake Erie, a new Chlamydomonas, Snow (326). 
2. Parasitism, effects on host : relation to disease. 
[For infection, transmission, see ii. G. 1 ; and for hosts, iii. c] 
Biological peculiarity of Chlamydomyxa montana. This organism, 
thougn itself no longer actually parasitic or saprophytic, always occurs in 
the ]uitrid liquid around decaying and half-decomposed Hypnum-mo^&. 
Penard (260; looks upon this habitat as reminiscent of an ancestral 
parasitic or saprophytic one. 
Destruction of nucleus in Ainoeha by fungal parasite, Gruber (128). 
Gregarinosis : — 
Relations between growing Gregarines and the intestinal host-cells, 
Leger & DuBoscQ (192). 
Relations between Urospora lagidis, in the trophic and sporulating 
phases, and the coelomic phagocytes of its host, Audoiiinia; healthy 
parasites apj)ear quite uninjured by the phagocytes, Brasil (41). 
Coccidiosis : — ■ 
Harmful effects of Diplocystis clerci on its host, w^hen strongly infected, 
Leger (189). — Attachment of Doliocystis pellucida to its intestinal host- 
cell, Brasil (41). 
Haemosporidiosis : — 
Karyolysis of the blood-corpuscles brought about by Hoemogregarina 
mperini and H. sergentium, Billet (22) & Nicolle (248); relation of 
H. curvirostris to the nucleus of the corpuscle, Billet (24). 
The occurrence of paranuclear corpuscles in the hsematids of tortoises 
infected with Hoemogregarines perhaps stands in relation with the presence 
of these parasites, even though not all the h?ematids exhibiting this 
karyolysis are actually parasitized. Billet (25). 
Piroplasmosis : — 
The different piroplasmoses of cattle, with figures of the parasites (un- 
specified), DSCHUNKOWSKY & LUHS (86). 
Canine piroplasmosis, general account, Galli-Valerio (115). — A study 
of canine piroplasmosis and the tick which conveys the disease, Bowhill 
& Le Doux (38), also Nuttall (252). — On the immunization of dogs 
against Piroplasma cam's, Theiler (341). 
Can Piroplasma higeminum live in the human blood? Difficulty of dis- 
tinguishing certain forms of this parasite from certain of those exhibited 
by the parasite of benign tertian malaria, Lingard (203). 
Good figures showing the relation of Piroplasma donovani to the leuco- 
cytes and blood-corpuscles are given by Donovan (83).— Minute forms of 
P. d., free or endoglobular, in the peripheral circulation, Laveran & 
Mesnil (173). 
" Leishnian-Donovan" bodies (Piroplasma donorani) in persons suffering 
from tropical splenomegaly ; their relation to the splenic cells and leucocytes 
of the host ; nature of the " matrix" ; comparison with other Piroplasmata 
and involution forms of Trypauosomes, Castellani (61), Christophers 
