240 
A Myxosporiclian 
2. The Myxosporiclian was found only in the space between Bowman’s 
capsule and the glomerulus of the Malpighian body and in the uriniferous 
tubules of the kidneys of the host, no other organ being infected. 
3. The mature spore contains two independent uninucleate sporoplasms 
which fuse into one prior to the germination in the posterior region of the 
stomach or duodenum of a new host. 
4. The germination of the spore was observed in hanging drop prepara¬ 
tions with the digestive fluid. 
5. The youngest stage found in the lumen of the tubule of the kidney, 
was the uninucleate form. 
6. The trophozoites multiply actively by a process of gemmation and 
probably also by a schizogony of the uninucleate forms. 
/. The trophozoites are, as a rule, disporous and the spores develop inde¬ 
pendently of each other. 
8. The vegetative nucleus persists throughout the entire trophic life of 
the individual. 
9. The Myxosporidian does not exercise any fatal effect upon the host. 
10. Infection takes place through the mouth. The liberated binucleate 
amoebulae probably penetrate through the wall of the small intestine, reach 
the coelom and are carried to the uriniferous tubules through the nephrostomes 
or blood vessels. 
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Ceratomyxa drepanopsettae mihi. Arch. Protist. xiv. 74-112, Pis. VII-VIII. 
Davis, H. S. (1916). The structure and development of a myxosporidian parasite of the 
squeteague, Cynoscion regalis. Journ. Morph, xxvn. 333-377, Pis. I-VII. 
(1917). The Myxosporidia of the Beaufort region. A systematic and biologic study. 
Bull. Bureau of Fisheries, xxxv. 203-243, Pis. XVI-XXIV. 
Debaisieux, P. (1918). Notes sur le Myxidium lieherkilhni Biitschli. La Cellule , xxx. 281 — 
290, PI. I. 
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Myxosporidie. Teil I. Arch. Protist. xxiv. 149-162, Pis. XII-XIV. 
(1917). Chloromyxum leydigi und seine Beziehung zu anderen Myxosporidien. 
Teil II. Arch. Protist. xxxvn. 276-326, Pis. XVII-XX. 17 Text-figs. 
(1917a). New facts and views concerning the occurrence of a sexual process in the 
myxosporidian life cycle. Amer. Natural, li. 719-739. 
Georgevitch, J. (1916). Note sur les Myxosporidies des poissons de la baie de Villefranche 
et de Monaco. Bull. VInst. Oceanogr. No. 322. 5 Text-figs. 
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