36 Prot. 
XVIII. PROTOZOA. 
[ 1904 ] 
tinguishable into somatic and germinal (sexual) nuclei, the former of which 
take no part in gamete-formation ; karyokinetic division, Leger (188). — 
Nuclear multiplication in sporulating cysts of Urospora , Brasil (41). 
Nuclear multiplication and behaviour of the chromatin in Thelohania 
mcenadis , Perez (263). 
Nuclear behaviour during the various phases of the life-history of Her- 
petomonas muscce-domesticce, Prowazek (277). — Nuclear differentiation, 
reduction, and fission in Trichomastix and Bodo , Prowazek (278). 
Nuclear complexity and differentiation in Trypanosoma noctuce and 
Spirochceta ziemanni ; the so-called “ blepharoplast ” is more than a centro- 
some — a kinetic nucleus of equal functional importance with the larger or 
trophic nucleus, Schaudinn (301). 
Nuclear changes during conjugation in Opalina intestinalis ; comparison 
in this respect with other ciliates, Cohn (77). — Nuclear multiplication in 
O. saturnalis, Leger & Duboscq (194). — N uclear maturation or purification 
during division in Opercularia stenostoma associated with “ recuperation,” 
Faure (103). 
E. Development; Life-Cycle. 
Encystment, and formation of little flagellate embryos, in Chlamydomyxa 
montana, Penard (260). 
Encystment in Difflugia urceolata follows after conjugation ; it is not 
merely protective or for resting- purposes, but plays an important part in 
further development, Zulzer (369). 
Development and growth of various intestinal Gregarines of Tracheates ; 
different types of development, Lisger & Duboscq (192). — Comprehensive 
comparative account of the growth and development of Gregarines from 
the sporozoite-stage, Luhe (209). 
Cysts and spores of Diplocystis clerci n. sp., Linger (189). — Development 
and growth of the young individuals in Gregarina ovata from sporozoites, 
Paehler (256). — Spores and sporozoites of Urospora lagidis , Brasil (41). 
Development of oocysts and spores in Adeiea transita , LIsger (189). — 
Oocysts, spores, and sporozoites of Angeiocystis n. g., Brasil (40). 
Ookinetes of Hcemogregarina bagensis observed in Placobdella catenigera 
with two nuclear bodies, one much resembling the “centrosome” of a Try- 
panosome, Brumpt (48). 
Development of the different forms of Trypanosoma noctuce and Spiro- 
chceta ziemanni from different types of ookinete ; complex life-history, a 
true Hsemosporidian ( Halteridium ) phase alternating with the Trypanosome 
phase, Schaudinn (301). 
Further evolution of Trypanosoma barbatulee in Piscicola , along the lines 
revealed by Schaudinn, and, similarly, of Trypanoplasma varium in Ilemi- 
clepsis , described by Leger (184 & 185). 
Evidence pointing to ontogenetic relationship between T. inopinatum 
and a Drepanidium of the green frog, which probably both represent phases 
in one complete life-cycle; forms transitional between “sporozoites” 
[probably merozoites] and Bpirochceta - like Trypanosomes, Billet (26). — 
Important experiments tending to prove that the Trypanosoma , in a leech, 
gives rise to the Drepanidium , in the frog, id. (20). 
Development of a flagellate (Trypanosome) phase in the splenic parasites 
of Kala-azar ( Piroplasma donovani ), Rogers (286). 
Notes on pansporoblasts and spores of various Micro sporidia, Lutz & 
Splendore (213). — Development and growth of the cyst, “sporonts” 
[pansporoblasts] and spores in Glugea anomala , Stempell (336). — Cysts 
and spores of G. stephani , Woodcock (361). — Sporonts and development of 
spores in Thelohania legeri , Hesse (141). 
Formation and development of the cyst, spores, and sporozoites in 
