942 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
pyriform body with about 12 to 16 scattered filiform tentacles, which sometimes show a tendency to ! 
form a distal whorl of 4 and a proximal more numerous whorl, the middle part of the body being less j 
thickly beset with tentacles. 
Gonosome. — Gonophores taking the form of single medusa; on separate pedicels growing from the ; 
branches. The medusae have 4 radial canals, unbranched, an apparently short, 4-lobed proboscis, j 
and numerous strong marginal tentacles the disposition of which could not be made out in the j 
immature medusae examined. 
Distribution. — Station 3859, between the islands of Molokai and Maui, 138 fathoms; station 4077, 
northeast coast of Maui, 99 fathoms; station 4098, north coast of Maui, 95 fathoms. 
This appears to be a true Corydendrium, but it differs from either of the other species of the genus | 
in bearing medusae. It is much smaller in all its proportions than C. parasiticum, with which I have 1 
directly compared it. 
Family HALECIM. 
Trophosome. — Stem fascicled. Saucer-shaped hydrophores borne alternately on branches and |j 
often having their margins reduplicated and a circular row of shining spots of dots some distance 
below the rim. Hydranths with conical proboscis and a single whorl of filiform tentacles. 
Gonosome. — Gonophores in the form of either sporosacs or medusae. 
Genus HALECIUM. 
Trophosome. — Colony without defensive persons, otherwise as described in the family definition. 
Gonosome. — Gonophores in the form of fixed sporosacs. No medusae.® 
Halecium scandens Nutting, new r species. 
(PI. ii, fig. 5; pi. viii, figs. 1-3.) 
Trophosome. — Colony growing like dodder over a specimen of Lytocarpus phceniceus, the long stolon- j 
like root-stock running along the main stem of the host for a surprising distance without branching or ] 
ramification of any sort. Near the distal end of the host a few branches of H. scandens are given off. j 
Stem long, slender, nearly straight, unbranched, divided into very long, slender internodes just above , | 
the hydrophores. Hydrophores on short pedicels with broadly flaring margins and without redupli- i 
cations. Hydranths very large, but the details not distinguishable. 
Gonosome. — Gonangia springing from lumen of hydrophores, lenticular, broader than long, with a 
curious mushroom-like body differing in shape from any others that I have seen, and suggesting the ! 
possibility of a medusoid form. 
Locality. — Station 3949, north of the island of Laysan, 59 fathoms. 
The very great length of the internodes, combined with the shortness of the pedicels and peculiar ; 
gonophores springing from the hydrophores, although this latter may be purely sporadic, make this lj 
species quite distinct from others of the genus. 
Of course if the gonophores produce medusae the species would go into the genus Campalecium . 
Torrey. 
Family CAMPANULARIDAi. 
Trophosome. — Hydrothecae well developed, nonoperculate, either with distinct pedicels or nearly 
sessile, but not adnate to or partly immersed in the stem or branches. Hydrothecal septum distinct. I 
Hydranth with a trumpet-shaped or subglobular proboscis. 
Gonosome.— Gonophores producing either the generative products direct or medusae which do not 
bear ova on the proboscis. 
The classification of the pediculate Calypteroblastea is at present in an exceedingly unsatisfactory 
condition, and no two authors are in substantial agreement as to the systematic arrangement of this | 
perplexing group. The present author is by no means prepared to offer a revision at this time, but j 
a Dr. Harry Beal Torrey, in his Hydroida of the Pacific Coast of North America, page 48, describes a new genus of Hale- 
cidse based on his discovery of a form which bears medusae instead of sporosacs. To this interesting form he has given the j| 
name Campalecium medusiferum. 
