118 Scientific Proceedings, Royal Dublin Society. 
CERIANTHEA. 
CERIANTHIDZ. 
Cerianthus nobilis, n. sp. 
Form.—Body of great size; presence of a terminal pore not 
determined; marginal tentacles long, tapering, in three cycles, 
from about 160 to 170 in number; oral tentacles very numerous. 
Colour.—Upper portion of column deep brown, paler below ; 
marginal tentacles, deep flesh colour; oral tentacles, yellowish skin 
colour. Disc with radial brown lines. 
Dimensions.—Length of column probably about 300mm. (in 
alcohol 105mm.); diameter, 26 mm. (in alcohol 19 mm.) ; length 
of marginal tentacles, about 80 mm.; length of tube, about 800 mm. 
(12 inches). 
Habitat.—Partially imbedded in the mud on the fringing reef 
of Thursday Island. 
HEXAOTINIA. 
STICHODACTYLINZ. 
CORYNACTIDZ. 
Corynactis hoplites, n. sp. 
Form.—Column about twice as high as broad, smooth, pedal 
disc expanded; tentacles, capitate, of two kinds, (1) marginal and 
(2) centripetal, situated on the disc, the latter in at least two cycles ; 
mouth can be extended into a short tube, finely ridged internally. 
Colour.—Colour, varied ; (a) column, burnt sienna-colour, with 
dark paired marks at the top of the scapus; tentacles, translucent 
white, with a pink or white core at the swollen tip ; mouth-cone, 
speckled gray; throat, orange; () similar, with pinkish-brown 
tips to tentacles ; six pairs of marks on capitulum ; (c) transparent 
grass-green, with brown streaks; tentacles, transparent, green 
tips. 
Dimensions.—Diameter of column, about 8 mm.; height, about 
14mm. 
