124 MARINE INVERTEBRATES 
four inches long. It is bright red in color, and from the center of the 
circle of tentacles the reproductive zodids hang in a cluster, like a bunch 
of grapes. It does not liberate swimming-bells. It is found in bunches 
on piles of wharves and bridges, in brack- 
dk ish water, on the eastern coast as far 
ANY. af south as Charleston, South Carolina. 
; 
eV : Corymorpha pendula. See Plate 
no. XLII. 
STN ae ‘Genus Hybocodon 
1 2 5% 
ane HI. prolifer. One of the largest 
YY, x lat tubularians, somewhat resembling Pa- 
{  rypha crocea. It is deep orange in color, 
LZ AK and the head is erect on a long 
Noy NG lg BX a stem. The reproductive zodids are in 
C yw y Fy al a cluster in the center of a double row 
iva en of tentacles, and resemble a basket of 
i < iF ° fruit. It grows singly, or in groups of 
.< Fey two or three, in shaded tide-pools, which 
[ap A are protected from the surf, and in which 
the water is very pure. It is found on 
the Massachusetts coast, but is not 
common. This species liberates swim- 
ming-bells. (Plate XLI.) 
Genus Pennaria 
\ P. tiaretta. The branches are ar- 
\y ranged alternately and at right angles 
to a central stem or axis; they taper, 
Pennaria tiarella; a branch, natural being shortest at the top and bottom of 
size, the stem. The zodids are red in color, 
and are arranged along the upper side 
of branches at considerable intervals. The stems are black and beaded, 
being constricted at intervals. The zodids have two rows of tentacles, 
the upper ones on a small proboscis. From the lower part of the pro- 
boscis deep, bell-shaped bodies, which eventually become swimming- 
bells, are developed. The species is found on rocks and eel-grass along 
the whole eastern coast. 
ane tae A species similar to P. tiarella, found on the coast of 
orida. 
Genus Bougainvillea 
B. superciliaris. This hydroid is found.in tide-pools on the New 
England coast, growing in clusters, about two inches high, attached to 
rocks or to mussel-shells. The stem is very slender, and branches. It is 
red in color. The meduse which it liberates are found in great numbers 
in the spring. The tiny swimming-bellsare nearly globular. The tenta- 
cles are long, are arranged in four clusters on the margin, and extend in 
every direction. The manubrium is yellow and short, and the mouth is 
concealed by four clusters of short tentacles. On these oral tentacles 
