466 CLASS ECHINODERMATA, 
Another ; Z. ocularis, Cuv., is attached to the eyes of her- 
rings and other fish. It has only short and simple horns, 
two larger, and two smaller. Its body is slender, its cords 
long and not folded. 
There is one with small horns, unequal, and very numer- 
ous. L. multicornis, Cuy., on the gills of a serranus, belong- 
ing to the East Indies. 
Another group, 
PENNELLA, Oken., 
Has the head enlarged, furnished at the nape with two small 
horns, the neck corneous, the body long, wrinkled cross- 
wise, and furnished behind with small filaments, disposed 
like the barbs of feathers. ‘The two very long filaments ori- 
ginate at the commencement of this pennated part. 
There is a species in the Mediterranean. Pennella filosa, 
pennatula filosa, Gm. Boccone mus. 286. Ellis. Trans. Phil. 
lxiil. xx. 15., seven or eight inches long, which penetrates into 
the flesh of the sword-fish, the tunny, &c. and torments them 
horribly. 
A third group, 
SPHYRIONS, Cuv. 
Has the head enlarged on both sides like a hammer, some 
small hooks at the mouth, a slender neck, followed by a de- 
pressed and heart-formed body, which, beside the two long 
cords, supports on each side a thick fasciculus of sete. Chon- 
dracanthe lisse, Quoy et Gaim. 
A fourth, 
ANCHOSELLA, (Cuv.), 
Is fixed to the gills only by a single production, which pro- 
ceeds from the under part of the body, and is directed back- 
a 
