242 BULLETIN OF THE 
theca. Branches arise in the axils of the hydrothecw peduncles, are annulated 
at the base, and give origin to hydrotheca, like the main stem. The pedicels 
of the hydrothec are annulated at both proximal and distal ends, and are oc- 
casionally annulated throughout. Hydrothece short, tapering towards the 
base; rim entire with an intrathecal partition toward the base. 
Gonosome. —Gonangia small, about twice the length of the hydrothece, 
tapering slightly toward the base, rounded off at the distal end, with a simple, 
spherical, terminal opening which stretches entirely across the distal end, 
borne on short peduncles annulated throughout and arising from the axils of 
the hydrothecz pedicels. 
Locality. — Ten miles north of Zoblos Island. 
This is a very delicate little form, so hyaline that it was only after prolonged 
staining that I was enabled to make out the structure of the very delicate 
hydrotheceo. I have referred it to this genus on account of the shape and 
structure of the contents of the gonangia, which are flattened and discoidal ; 
the more advanced ones showing quite plainly that they are developing me- 
duse and not planule. 
Campanularia coronata sp. nov. 
Plate IV. Fig. 22. 
Trophosome. — Hydrocaulus rooted by a creeping hydrorhiza, small and deli- 
cate, annulated at the base, bearing only a few pedunculated hydrothecw ; each 
pedicel annulated at its base and also at the base of the hydrotheca. Hydro- 
theew deep, tubular, tapering but slightly to the rounded base, with seven or 
eight strong teeth surrounding the orifice. The edge of the aperture leading 
from the hydrotheca into the stem is ornamented with seven or eight spherical 
swellings of the perisarc. 
Gonosome. — Unknown. 
Locality. — Ten miles north of Zoblos Island, 
The specific name is derived from a fancied resemblance in the ornamental 
aperture at the base of the hydrotheca to a crown. 
Lafoéa serrata sp. nov. 
Plate IV. Fig. 25. 
Trophosome. — Hydrothecw springing at occasional intervals from a creeping, 
hydrorhiza ; a proximal portion, varying from a third to a half of the entire 
length of the hydrotheca, is adnate to the hydrorhizal filament ; the remaining 
free portion is bent at right angles to the adnate part and terminates in ۵ 
slightly expanded orifice ; the adnate portion is ornamented with a number of 
ridges or thickened elevations of the perisaro on the outer side. 
Gonosome. — Unknown. 
Locality. —Near Havana, Cuba. Depth, 292 fathoms, 
This is a very elegant little species, and readily distinguished by the form 
and ornamentation of the hydrotheco. 
