114 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [408] 
much less common. Its hydroid cells are comparatively small and their 
pedicels very short. 
Several very delicate and beautiful creeping hydroids, belonging to 
the Campanularians, also occur attached to larger hydroids, and the 
alge. Among these are Clytia Johnstoni, having comparatively large, bell- 
shaped cups, with a notched rim, each borne on a long, slender, generally 
simple pedicel, ringed at each end, and arising from the creeping stems. 
The reproductive capsules are urn-shaped and anuulated. The C. inter- 
media is quite similar in its growth, but has smaller and deeper cups, with 
smaller notches around the rim. The Orthopyzis caliculata grows in the 
same manner; it has beautiful little bell-shaped or cup-shaped cells, 
with an even rim, each borne on a long, slender, annulated pedicel with 
one of the rings, just below the cup, very prominent. Its reproductive 
capsules are large, oblong, smooth, and obtuse at the end. The Platy- 
pyxis cylindrica has small, very deep, somewhat cylindrical cups, with 
the rim divided into sharp teeth or notches; each one is borne on a small, 
slender pedicel, generally less than an eighth of an inch high, feebly 
annulated at each end. The reproductive capsules are elongated, com- 
pressed, flaring slightly at the end. The Campanularia volubilis, is also 
a very small, but elegant species; it has deep cylindrical cups, which have 
a regularly scolloped rim, the scollops being small and evenly rounded. 
The pedicels are very slender, and are annulated spirally throughout 
their whole length, so as to appear as if twisted; just below the cup 
there is one prominent rounded annulation, or bead, the whole resem- 
bling in miniature the stem of certain wine-glasses and glass vases. 
The reproductive capsules are vase-shaped, attached by short pedicels, 
and have the neck elongated and gradually narrowed to the end, 
which flares slightly. 
The Lafoéa calearata is also a small creeping hydroid, belonging to 
another family. It has curved tubular cells. It nearly always grows on 
Sertularia cornicina, which is a small species, resembling S. pumila, 
(Plate XX XVII, fig. 279.) The Sertularia argentea (Plate XX XVII, fig. 
280) is a large, profusely branched species, often growing to the length 
of a foot or more. It is very abundant in this region. SS. cupressina is 
closely related, but much less common. The Hydrallmania falcata is 
also a large species very common on these bottoms. It can be easily 
distinguished by the spiral arrangement of its branches and the unilateral 
arrangement of its jug-shaped cells along the branches. 
The Hudendrium ramosum and LH. dispar are not uncommon on rocky 
bottoms, and are both beautiful species, somewhat resembling the 
Pennaria, (Plate XX XVII, fig. 277.) 
The species of Polyps are the same as those found on rocky shores 
at low-water mark. The coral, Astrangia Dane, (p. 329,) is much more 
common than on the shores, and grows larger, some of the specimens 
becoming four or five inches across, and rising up in the middle into 
