76 SEA-SHORE LIFE 
The Red Crust, ( Yscharella variabilis), forms a dull-red or 
pinkish incrustation over rocks and dead shells, layer after layer 
being formed until the rock becomes thickly coated with a mass 
bearing a superficial resemblance to 
coral. 
It is common from South Caro- 
lina to Massachusetts Bay from low 
tide level to a depth of 150 feet, and 
is especially abundant in shaded tide 
pools. 
The False Coral, (Discosoma ni- 
dita, Fig. 45), forms rough, nodular 


masses of dull greenish-yellow color, 
Hig. 455, FALSE CORAL. Acoli - vand is: extremely abundant im dluong 
line animal. Long Island Sound. a s aid 
Island Sound where it is commonly 
but erroneously called “coral.” These nodular masses are a grad- 
ual growth, and are due to layer after layer of the incrusting Poly- 
zoa which always forms over a dead shell or some loose stone. It 
is found only below low tide mark, and is most abundant in water 
about thirty feet deep. 
