40 Prot. 
XVIII, PROTOZOA. 
Formation of anisogamous gametes and conjugation in Pterocephalus , 
L^ger & Dubosoq (211). — Micro- and macro-gametes and conjugation in 
Schaudinnella henlece , a new Gregarine; early sexual differentiation of the 
trophozoites, as male and female gametocytes, Nusbaum (282). 
Association of gametocytes, formation of gametes and fertilization in 
Adelea mesnili , Perez (292). — Formation of micro- and macro-gametes and 
fertilization in A. dimidiata var. coccidioides , L£ger & Doboscq (209). 
Formation of micro-and macro-gametes, in “ Hcemamceba” ziemanni , 
Laveran (196). — Sexual cycle of Hcemogregarina stepanovi in a leech 
described, Siegel (349). — Actual fertilization seen, in the blood, in a case 
of the pernicious parasite, Moore (273). — Origin ^nd development of the 
gametocytes of the tertian parasite, Watson (402). — Notes on the gameto- 
cytes of Plasmodium vivax , and Laverania malar ice, Argutinsky (4). 
Conjugation processes in Polytoma , Prowazek (302). 
The significance of conjugation in Infusoria, Loisel (236 .& 238). — 
Conjugation in Licnophora auerbachii , Stevens (371). 
Conjugation described in Acineta tripharetrata n. sp., Entz (102). 
3. Nuclear changes : mitosis : directive centres, etc. 
Intra- and extra-nuclear division centres in the Protozoa, Calkins (45). 
The division of the two “parallel ” nuclei in Arcella , corresponds to that 
in the case of Trepomonas , Dangeard (76). — Behaviour of the nuclear 
material in certain Rhizopods during division ; homology of the chromidial 
part with sexual nuclear-material (‘< micronucleus ”), Schaudinn (333). 
Nuclear changes in gamete- and sporozoite-formation in Schaudinnella , 
Nusbaum (282). 
Nuclear division in Entosiphon sulcatum , Prowazek (303). — Varieties of 
nuclear division in the Euglenidce , Dangeard (79).— Nuclear division in 
Monas vulgaris \ presence of a “ blepharoplast ” and “ rhizoplast,” 
Dangeard (75). — Indistinctness of the centrosome in Trypanosoma equinum 
owing to its very minute size, Ligni^res (227) and Elmassian &. 
Migone (98). 
Nuclear division in Bovena subcylindrica ' and Licnophora spp., Stevens 
( 37 1). — Amitotic nuclear division in Eutreptia viridis ; behaviour of the 
nucleolo-centrosome, Steuer (370). — Nuclear division in Opalina n. spp., 
Bezzenberger (17). — Nuclear changes in regeneration experiments on 
Stentor coeruleus , Prowazek (304). 
4. Development and life-cycle. 
Complicated life-cycle and alternation of generations in certain Rhizo- 
pods, Schaudinn (333). — Spore-formation following conjugation in Amoeba 
undulans , Traube-Mengarini (388 & 389). 
Maturation of Gregarine-cysts after expulsion, Crawley (69). — Curious 
binuclear sporozoites in the gymnosporous Aggregata vagans n. sp., 
Leger & Duboscq (212). — In Schaudinnella the definitive sporoblasts are 
free and not enclosed in a cyst: each spore or “amphiont” forms many 
sporozoites, Nusbaum (282). — Development (growth of sporozoites etc.) in 
Stylorhynchus longicollis , LIsger & Duboscq (210). — Short account of the 
life-cycle of a Gregarine (sp. indet.) in Stegomyia fasciata , Marchoux, 
Salimbeni & Simond (248). 
General consideration of the life-cycle of Coccidia, Mesnil (260). — 
Sporogony and complete life-cycle of Adelea mesnili , Perez (292), and of 
A. dimidiata var. coccidioides , L£ger & Duboscq (209). — The sporocysts of 
the Coccidia of Sepia and Octopus are dimorphic, with micro- and macro- 
sporozoites; those in the octopus are polyzoic [see also iv. c. 1], Jacquemet 
( 166).— Detailed account of sporulation in Coccidium cuniculi , Metzner 
( 262). — Probable life-cycle of Nematopsis, a monozoic Coccidian, Linger (205). 
