946 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
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Lictorella halecioides (Allman). 
(PI. x, figs. 1-4. )~ 
Gonosome. — (Not heretofore described. ) Gonangia forming a true “coppinia” mass, obovate in 
general form, with one shoulder produced into a conspicuous hook that bends over the gonangium. \ 
The gonangia are firmly adherent, the connection not being dissolved by boiling in potash. Fig. 1, ! 
pi. x, shows a cross section of the mass and stem, and also the connection between some of the ( 
gonangia and the component tubes of the stem. The hook is much broader in front view than in its |j 
lateral aspect, as shown in figs. 2-4. 
This is one of the most abundant species in the collection, being found at station 3854, south coast ( 
of Molokai Island, 134 fathoms; station 3856, between the islands of Molokai and Maui, 127 fathoms; I 
station 3859, between the islands of Molokai and Maui, 138 fathoms; station 3863, between the islands 
of Molokai and Maui, 127 fathoms; station 3936, north of the island of Laysan, 130 fathoms; station !j 
3939, north of the island of Laysan, 163 fathoms; station 4098, north coast of Maui Island, 95 fathoms. : 
Lafcea halecioides Allman, Hydroida of the Porcupine Expedition, Trans. Zool Soc., Vol. VIII, 1873, 472. 
T in ■ • 
Lictorella cervicorms, new species. 
(PI. iv, fig. 1; pi. x, figs.'5-9. ) 
Trophosome. — Colony flabellate, small, very delicate and graceful, attaining a height of about an j 
inch and a quarter. Main stem and larger branches fascicled. Branches subalternate, most of them [ 
monosiphonic, sinuous, divided into regular internodes, each of which bears a strong process near its 
middle from which a pedicel springs. Hydrothecse deep, tubular, cyathiform, projecting forward and j 
outward, ending in a round aperture with even margin, the proximal end passing insensibly into the ! 
pedicel from which it is separated by an internal diaphragm. At the base of each pedicel there is a 
true nematophore containing a sarcostyle and a nematocyst battery. 
Gonosome. — Gonangia forming a “coppinia” mass on the main stem, roughly triangular in out- j 
line, the distal ends being the broader on account of the opposite shoulders, which are quite con-1 | 
spicuous and end in round apertures. Midway between these shoulders there is a short neck ending S 
in a third aperture. The individual gonangia are borne on shdrt branchlets, which continue beyond i 
them, arching over each gonangium so as to form a protecting network of such branches over the ; 
aggregated gonangia. This structure seems to resemble quite closely the phylactogonia found in J 
certain genera of plumularian hydroids. 
Locality. — Station 3859, between the islands of Molokai and Maui, 138 fathoms. 
This is one of the most beautiful and graceful hydroids that I have seen. The gonosome is*' 
unique in certain features, but the species doubtless belongs in the genus Lictorella. The nemato- | 
phores are indistinguishable from some of those found in the Plumularidse. 
Genus FILELLUM. 
Trophosome. — Colony parasitic, growing from a. creeping rootstock. Hydrothecse tubular, greatly j 
curved, the distal portion being adnate to the stem or to the host. 
Gonosome. — Gonangia forming a true “coppinia” mass, much as in the genus Lafoea. 
Filellum serpens (Hassell). 
Specimens of this well-known form were noticed while other species were being examined, but 1 
the species and station numbers were not noted at the time, and I have been unable to find them on 
going over the collection again. I am confident that I saw them, and it can be readily understood 
that they could well be overlooked in going over such a quantity of material a second time. . 
Campanularia serpens Hassell, Zoologist, Vol. VI, 1848, No. 69, 2223. 
Genus CRYPTOLARIA. 
Trophosome. — Stem fascicled, with an axial and peripheral tubes. Hydrothecse without peduncles, 
and adnate to some extent, at least in the distal parts of the branches. 
Gonosome. — A compact “coppinia” mass, much as in Lafoea. 
