THE WONDERS OF THE SHORE. 71 
the shell is different), who crawl and browse by 
thousands on the beds of Zostera, or grass wrack, 
which you see thrown about on the beach, and 
which grows naturally in two or three fathoms water. 
Stay: here is one which is “more than itself.” On 
its back is mounted a cluster of barnacles (Balanus 
Porcatus), of the same family as those which stud 
the tide-rocks in millions, scratching the legs of 
hapless bathers. Of them, 1 will speak presently . 
for I may have a still more curlous member of the 
family to show you. But meanwhile, look at the 
mouth of the shell; a long grey worm protrudes 
from it, which is not the rightful inhabitant. He 
is dead long since, and his place has been occu- 
pied by one Sipunculus Bernhardi; a wight of low 
degree, who connects “ radiate” with annulate forms 
—in plain English, sea-cucumbers (of which we 
shall see some soon) with sea-worms. But how- 
ever low in the scale of comparative anatomy, 
he has wit enough to take care of himself; mean 
ugly little worm as he seems. For finding the 
mouth of the Turritella too big for him, he has 
