cypris larva
84
vibracula. They have various types of trochophore larva. Many recent and fossil
species, e.g., Crisia.
cypris larva ~Cirripedia.
cyst a resting stage formed by some Bacteria, algae and Protozoa in which the whole
cell is surrounded by a protective layer. N.B. cyst should not be confused
with spore, which is formed inside a cell.