958 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Fig. 1. 
Fig. 1. 
2. 
3. 
4. 
Fig. 1. 
2. 
3. 
Fig. 1. 
3. 
4. 
5. 
Fig. 1. 
2 . 
4. 
Fig. 1. 
2. 
3. 
4. 
PLATE IV. 
(All figures x 5.) 
Lictorella cervicornis Nutting, 
gonosome. 
Cryptolaria symmetrica Nutting. 
Sertularella crenulata Nutting. 
showing 
Fig. 4. Sertularella torreyi Nutting. 
5. Sertularia snyderi Nutting. 
6. Diphasia palmata Nutting. 
PLATE V. 
(Figures 3-6 x 5. Figs. 1 and 2 are much more liighly magnified than the others.) 
Plumularia milleri Nutting, showing pecul- 
iar disposition of the gonangia. 
Plumularia delicata Nutting. 
Monostsechas fisheri Nutting. 
Antennella complexa Nutting. 
Fig. 5. Thecocarpus niger Nutting, showing gono- 
some. 
6. Lytocarpus hawaiensis Nutting, showing 
gonosome. 
Lytocarpus balei Nutting. 
Halicornaria flava Nutting. 
Lytocarpus similis Nutting. 
PLATE VI, 
(All figures x 5.) 
Fig. 4. Halicornaria bryani Nutting. 
5. Plumularia jordani Nutting. 
PLATE VII. 
Hydrodendrium gorgonoides Nutting, sin- 
gle hydranth with hernia-like gonophore. 
Expanded hydranth. 
Balea mirabilis Nutting, part of branch. 
Balea mirabilis, single hydranth, showing 
the two whorls of tentacles. 
Corydendrium corrugatum Nutting, part of 
branch. 
Fig. 6. Corydendrium corrugatum, single hydranth 
and hydrophore. 
7. Oral view of hydranth. 
8. Corydendrium minor Nutting, part of 
branch. 
9. Corydendrium minor, sessile medusa. 
PLATE VIII. 
Halecium scandens Nutting, part of 
branch. 
Halecium scandens, hydranth and hydro- 
phore. 
Halecium scandens, gonangium and gono- 
phore. 
Campanularia eloisa Nutting, part of col- 
ony with gonangium. 
ig. 5. Campanularia eloisa, hydrotheca. 
6. Campanularia eloisa, liydrotheca. 
7. Campanularia eloisa, part of branch show- 
ing scattered pedicels. 
8. Stegapoma gracilis Nutting, group of hydro- 
thecse. 
9. Stegopoma gracilis, hydrotheca and gonan- 
gium. 
Stegopomagilberti Nutting, part of colony. 
Stegopoma plumicola Nutting, group of 
hydrothecse. 
Stegopoma plumicola, hydrotheca and 
gonangium. 
Opercularella longicauda Nutting, group of 
hydrothecae. 
Opercularella longicauda, hydrothecse 
showing different positions of the 
opercula. 
7. Opercularella longicauda, gonangium. 
8. Lafoea contorta Nutting, group of hy- 
drothecse on main stem. 
9. Lafoea contorta, hydrothecse on end of 
branch. 
PLATE IX. 
Figs. 5, 6. 
