662 Cc. H. MARTIN. 
This conclusion holds good for Ophryodendron 
sertulariz. 
(2) Ophryodendron is a true dimorphic form, the pro- 
boscidiform individual (A) giving rise by a process 
of external budding to a vermiform individual (8) 
of quite different structure. 
(3) Both the proboscidiform and the vermiform individual 
can give rise to ciliate embryos. 
(4) The ciliate embryos of the proboscidiform develop on 
fixation into young proboscidiform individuals. It 
is probable that the ciliate embryos of the vermi- 
form individuals also develop into proboscidiform 
individuals. 
LITERATURE. 
Ophryodendron. 
Beneden, van—‘ Animal Parasites,” ‘ Inter. Sci. Series,’ London, 1876. 
Biitschlii— Bronn’s Thierreich’: ‘“ Protozoa,” 1889. 
Claparéde et Lachmann. Etudes sur les Infusoires et Rhizopodes,’ 
vol. 2, ‘* Extrait du Tome 7 de l'Institut Genevois,’ 1860-1861. 
Daday.—* Ein kleiner Beitrag zur Kenntniss der Infusorien fauna der 
Golfes v. Neapel.,” ‘ Mitth. aus der Zool. Stat.,’ Bd. 6, 1886. 
Fraipont.—‘ Récherches sur les Acinétiens de la cote d’Ostende,” 
‘Bull. de Acad. Roy. de Belg.,’ 2me sér., T. 44, p. 773, 1877. 
Gruber.—‘ Die Protozoen des Hafens von Genua,’ Halle, 1884. 
Hincks —‘“ On the Protozoan Ophryodendron abietinum,” 
‘Quart. Journ. Mier. Sci.,’ vol. 13, new series, 1873. 
Koch, von.— Zwei Acineten auf Plumularia setacea, Ellis,’ Jena, 1876. 
Milne. —“ On a new Tentaculiferous Protozoon ;” (1) ‘ Proc. Phil. Soc., 
Glasgow, vol. 18, 1886-87 ; (2) ‘ Journ. Roy. Micr. Soc.,’ 1887. 
Robin.—* Memoire sur le Structure et la Reproduction de quelques 
Infusoires Tentaculés Suceurs et Flagellés,” ‘Journ. de I’ Anat. 
et Phys.,’ t. 13, 1879. 
Sand.— Etude Monographique sur le Groupe des Infusoires Tentacu- 
liferés,’ Bruxelles, 1901. 
Saville Kent.— A Manual of the Infusoria, W. H. Allen, London 
1880-82. 
