FAMILY IV. PENNATULIDiE. 
12. Pennatula,* Linnaeus. 
Character. Polype-mass free, plumous, the shaft subcylin- 
drical , naked beneath, pennated above ; pinnae two -ranked, spread- 
ing, flattened, and polypiferous along the upper margin . 
1. P. phosphorea, purplish-red, the base of the smooth stalk 
pale ; rachis roughened with close set papillae and furrowed down 
the middle ; pinnae close ; polype-cells uniserial , tubular, with 
spinous apertures . Sir R. Sibbald. 
Vignette, Fig. 22. 
Formed from Penna , a quill — which the species so remarkably resemble 
that we may say in the words of Lamarck — “ II semble, en effet, que la nature, 
en formant ce corps animal compose, ait voulu copier la forme exterieure d’une 
plume d’oiseau.” — Anim. s. Vert. ii. 425. 
