Monthly Microscopical"] 
Journal, Sept. 1, 1869. J 
Floscularia coroneUa. 
.187 
Gosse in .his facile and forcible manner, further than to note some 
points that may differ therefrom in this species, or to suggest further 
inquiries in the economy of them all. 
The currents of granular matter circulating between the body 
and the disc are here distinctly seen during the act of eversion 
issuing in an irregular mass from the second or labial diaphragm, 
principally along the dorsal aspect of the body, permeating the 
vessel round the neck, and coursing along the channels to the lobes, 
which they seem to inspire with sensitiveness ; these channels from 
the collar to the funnel rim are arranged in pairs running down one 
from each angle at the bases of the lobes, except at the dorsal lobe, 
along which their course is in one central passage direct from the 
collar, the channels in pairs anastomosing at the diaphragm, de- 
scending thence to the posterior swelling of the body, where they 
are distinctly seen to merge into one tube, passing down to the foot, 
along the whole course of which are sparingly distributed isolated 
molecules of the circulating matter. 
The frontal lobes are found somewhat of a dumb-bell figure, in 
transverse section (Plate XXY., Fig. 9), the thickened margins being 
continuous productions of the funnel rim, at their junction with 
which they exhibit internally the peculiarity called "Yacuola 
thickenings" (Plate XXY., Figs. 5, 6, 7, and 9), which, strictly 
speaking, is a misnomer, however convenient may be the acceptation 
of the term as expressing a " space filled with matter other than 
tissue," |because a vacuum implies "a space unoccupied by matter ;" 
they occur . in the disc of this species as they do in many other 
Kotifers, and also in the prolongation of the body below the visceral 
cavity, points which are both efiected by the animal's retraction in 
the folding of the disc and the contraction of the parietes of the 
body; and it is suggested for the consideration of observers that 
these " vacuola thickenings " are the effects of such foldings and 
contractions of the substance of the body in the respective positions 
in which they are seen. Take for instance the disc of Lacinularia, 
the vacuola thickenings are there shown in connection with radiating 
branches, and if a paper disc be made of a similar form, and drawn 
through a ring representing the neck, the puckerings or corruga- 
tions will assume something of the arrangement of the figure there 
shown. 
The setae are set, not only on the knobs from which they radiate 
in all directions, but are continued on each side of the lobe where 
they are very short, along the whole circumference of the disc, 
as in F. campanulata, increasing considerably in length in the 
spaces between the lobes, though not easily seen in a lateral view 
of the animal, and in the dorsal lobe the thickened rim is produced 
at its base into a rounded process at both angles (Plate XXY., 
Fig. 9 h)j from each of which radiates a tuft of setae approaching 
VOL. II. L 
