22, THE HALL OF SHELLS. 
At this up sped a white wave from the 
sea. It caught the little ruffled and frilled 
wraith of the shell, and with a single sweep 
drew her into its darkest depths, out of sight 
forever. 
A limpet, Patella vulgata, with its dome- 
like house, is shown in our engraving, in which 
are also the sea snails and the razor-shell. 
The illustration of the Palmer or Pilgrim 
shows the manner in which scallop shells were 
worn as badges of a holy knighthood. An 
empty St. James’s shell—/Pecten Jacobeus— 
hes in the left foreground of the picture, while 
in the right is a shell with its living immate, 
displaying the delicate fringelike tentacles as 
seen playing lightly in the water when the 
valves of the shell are shghtly opened. 
Between these lies a /’usus or spindle shell, 
well named—long, slender, thin-lipped, and 
without varices. 
Upon each side are arranged several species 
of Serpula, which look like little stone ser- 
pents with their plumed and crimson crests. 
Annelids they are, their shelly, twisted tubes 
twining round and fastening themselves upon 
shells, stones, and other submarine objects, 
sometimes completely covermg them. The 
dwellers in these calcareous, contorted tubes 
