eagle re 1 cept ae 
7 TT RS eS Reet, ee EER Te AE oe eee 
Ne we os} Seis en Seas eo i 
cee! Ea . 
as Infusoria flagellata. 209 
each other, at or about the middle of the body. When fully 
expanded, they are from one-fifth to one-fourth the diameter 
of the monad, and have a perfectly globular shape. In ap- 
pearance, and manner and rate of systole and diastole, they 
resemble those of Codosiga so closely that the former might 
be substituted for the latter with scarcely a chance for a detec- 
tion of the change. As the rate of systole of each vesicle, 
which is once in half a minute, was observed directly through 
the undisturbed layers of the colony, and moreover at the edge 
of the ostioles, there need be no hesitation in aggepting the 
record as that of the normal measure of pulsation. 
§ 11. Anthophysa Miilleri, Bory. Pl. VI. figs. 47-61 ; 
Pl. VIL. figs. 62, 63. 
_ A description of this infusorian, but without illustrations, 
has already been published in the ‘Annals’ for December 1866. 
In order to carry out the object of this memoir to its fullest 
extent, I propose here to make quite large extracts from this 
paper, and also to add a number of figures, both for the better 
understanding of the character of the animal and for the sake 
of comparison with others which are illustrated in the accom- 
panying plates. 
Th 
e mononematous lagellata which are described in the 
foregoing pages (§§ 1-10) are connected with the hetero- 
nematous forms through two diverse lines; or, rather, they are 
closely allied to two different types of diversiflagellate Infusoria, 
of which Anthophysa is an example of one type, and Anisonema 
({§ 13) a representative of the other—both of the flagella of the 
former being proboscidiform, and, of the latter, one being 
gubernaculiform and the other proboscidiform. The intimate 
alliance of Anthophysa with Monas may be best expressed by 
saying that the former is a Monas modified by the addition of 
a comparatively minute c¢liwm, which is affixed to the head 
near the flagellum. 
Anthophysa Miilleri, Bory (Epistylis? vegetans, Ehr.), is 
quite common among freshwater plants, such as Myriophyllum, 
oa, and Utricularia, and adheres to their filiform 
leaves like an irregular, floccose, brownish deposit. 
_ “ Under a low magnifying-power this floccose matter appears 
to consist of clusters of very jagged, irregularly branching and 
contorted, semitransparent, intertwined stems, and projecting 
tapering and flaatble twigs (pd). ach of the tips of the 
latter sustains a single, more or less globose mass of spindle- 
shaped bodies (md), which radiate. from a common centre of 
attachment, and are kept in a constant agitation by the spas- 
modic jerks of a long, stout, usually rigid, arcuate filament (f?), 
