156 Mr. H. J. Carter on Grantia ciliata, 
ciliata (“bei S. celiata feilen ”’), which I fancy must be a mis- 
take,asfrom microscopical examination of specimens now before 
me | must agree with Lieberkiihn and Bowerbank in affirm- 
ing that the collar-ring (“ Halsring,”’ H.) in all three (that 
is including S. raphanus) commences where the conuli on the 
surface outsede, and therefore the oscules of the radial cham- 
bers on the surface of the cloaca cnside, cease and ends where 
the corona proper or circle of long, straight, setaceous, simple 
spicules commences (PI. VIII. fig. 2, 4), and that this layer of 
comparatively thick acerate spicules externally may be more or 
less present, according to the wear and tear above noticed to 
which the specimens may have been subjected. How far we 
may be justified in identifying with Sycandra raphanus the 
specimens of Grantia ciliata, var. spinispiculum, which I have 
lately found here, the following illustrated description, as above 
suggested, may determine. 
Granita ciliata, var. spinispiculum. (PI. VILE. figs. 1-8.) 
Pyriform elongated, fixed by the small end to the object on 
which it may be growing, terminated at the large or free end 
by an asbestine glistening pencil of long straight spicules ; 
conulated over the surface, which is also ciliated with fine 
long spicules, inclined forwards and often presenting an asbes- 
tine sheen, like that of the pencil of spicules at the free end ; 
more or less inflated and bent upon itself, often dividing 
into two heads, that is bigeminate (Pl. VIII. figs. 1 and 2). 
Colourless or transparent white. Consistence fragile. Sur- 
face uniformly covered with conical processes in juxtaposition 
(fig. 2, aaa), whose framework is composed of triradiate spi- 
cules, terminating towards the point of the cone in a slightly 
extended ray, which, intermingling with a bunch of linear 
spicules consisting of fifty or more of variable length, alto- 
gether forms the ciliary covering of the body just mentioned. 
“ Bunch of linear spicules’? composed of six forms, viz. :—1, 
extremely slender, almost immeasurably thin, straight, 
smooth, almost imperceptibly -tapering outwards from an 
equally slight enlargement of the proximal end, in shape 
something like knitting-needies (‘“ Stricknadeln,” H.), in 
bundles scantily dispersed among the larger acerates, variable 
in length, averaging perhaps about 1-85th inch long, but 
seldom found entire from their delicacy. 2, short, fusiform, 
shghtly curved and spined over one or both sides of the distal 
portion, which is terminated by a short smooth spur turned in 
the opposite direction, varying in length about 1-461st of an 
inch, which is that of the shortest observed (fig. 3, ¢). 3, 
