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THE SCHIZOGREGARINES: 
A REVIEW AND A NEW CLASSIFICATION. 
By H. B. FANTHAM, D.Sc. Lond., 
Christ’s College, Cambridge, Assistant to the Quick Professor of Biology 
in the University; lately Assistant in the Zoological Department, 
University College, London. 
(Nine Figures and one Diagram.) 
CONTENTS. 
I. Introduction ......... 
II. Historical Survey. 
III. Occurrence of the Various Genera. 
IV. General Morphology. 
V. General Life-History. 
VI. Detailed Morphologies and Life-Histories 
Ophryocystis, p. 379 Selenidiiclae, p. 386 
Eleutlieroscliizon, p. 382 Merogregarina, p. 390 
Schizocystis, p. 383 Aggregata, p. 392 
Siedleckia, p. 384 
VII. Systematic List of Families, Genera and Species . 
Ophryocystidae, p. 397 Merogregarinidae, p. 400 
Schizocystidae, p. 398 Aggregatidae, p. 401 
Selenidiidae, p. 399 
VIII. Classification. 
Previous Classifications. 
A New Classification. 
IX. Affinities.......... 
X. Summary. 
References to Literature. 
Appendix: Glossary of Terms. 
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I. Introduction. 
At the present time, when so much interest is being displayed with 
regard to the study of the Protozoa, there is danger of too much 
attention being centred on those Protozoal organisms which give rise to 
disease in man and in the higher animals, to the neglect of many most 
interesting parasitic forms which do not necessarily give rise to disease, 
