48 
Journal of the 
rapid. Ciliary motion beautiful and very distinct, tlie cilia being 
much longer than in any other species observed by me. 
In most of the above species the colours were dull, and of sober 
hues, such as light browns and creamy whites. Bugula dentala 
was of bluish green, deeper in shade towards the tips of the 
branches, while the colour of the polyzoon was a light brown; 
but even here the colour was not brilliant. If nature seems to 
have denied to these moss-like Polyzoans the additional beauty of 
varied colours, she seems to have gone to the other extreme with 
the calcareous kinds. Of Lepralia I found three species; of 
Cellepora four. The colours in ail being simply magnificent. 
In the scarlet Lepralia, L. Ellerii (1), the colour is very bright, 
and seems to be located in a fleshy epidermis, with which the 
stony polyzoary is coated. This epidermis is granular and of 
considerable thickness, as plainly seen by strong daylight, while 
on the points of many of the older spines or bosses this epidermis 
is thin, as if nibbed or worn, showing the usual crystal clearness 
of the calcareous base. 
In other species the colours were intense and beautiful. One 
had an olive green epidermis minutely and irregularly spotted 
with pure white. In another the colour was a bright black, with 
a golden tracery of yellow spots connected by fine lines. Another 
had crystal walls, spotted with opal white, while the polyzoon was 
a bright brick red. There were sixteen tentacles on this species, 
and inside of some of the cells I noticed small masses of intense 
crimson near the aperture, seemingly unaffected by the motions of 
the animal, similar in appearance to the contents of the ovicells. 
Lepralia punctata (?) * is a lovely species, and very interesting. 
Tentacles, twenty; lophophore fully extended from cell; outer 
cell wall widely perforated. In some instances the perforations 
run into each other, forming large apertures, showing the thin 
wall of the inner cell, between which and the outer cell there is 
an open space, affording free access for the water. This was 
evident upon seeing a tiny Rotifer swim in and out. Through 
these perforations almost the whole length of the animal can be 
clearly seen; the cell walls being also very transparent. The 
polyzoon is coloured yellowish brown. _ _ 
Probably L. monoceros. 
