SQUIRTS, POLYPS, AND JELLY-FISHES. 67 
ance of a gooseberry, but of an exquisitely deli- 
cate structure, is occasionally thrown on our shores. 
It is the Plewrobrachia rhododactyla, the type of a 
group known as the comb- 
bearers ( Ctenophora), which 
differ in some essential 
PORPITA. 
points of structure from 
the normal jelly-fishes. 
Probably all jelly-fishes 
are phosphorescent, and 
PLEUROBRACHIA. 
the glow of golden light 
which they emit consti- 
PORTUGUESE-MAN-OF-WaR. tutes one of the splen- 
Ome ee dors of the oceanic waste. 
From far and near, if the sea be agitated, the 
mellow lights may be observed to illumine the en- 
veloping darkness, while along the surf-bound coast 
