the only mcinher of the grou}) in which the soft parts
are knoAvn, the tentacles lie hetween the (spurious ?)
septa. Air. Aloseley oliserved the same fact in a
stylasteracean nearly allied to Cryptohelia dredged
in 500 fathoms off the Aleangis Islands. The genus
F io . 65.— M i l n e - E d w a r u s . Twice th e n a tu r.il .size. (Xo. 24.)
Cryptohelia has its hranclies disposed in a uniform
vertical plane, with the calióles all directed toAvards
one face of the plane. The coral tissue is unusually
dense and Avhite; a thin lamina of coral tissue produced
from the margin of each calicle on one side
projects in front of the mouth of the calicle and forms
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