14 
from all species of Cryptohefia in the presence of a style in the gastropores. Moreover the 
character of the lid in S. ver~gznzs is different from that of Cryptohelia in being developed later. 
The lid is also smaller and irregular. The dactylozooids do not atrophy on the side of the lid, 
as in Cryptohelia, the cyclosystems being complete The cyclosystems vary very much in size, 
being from 1,6 X 0,8 mm. to 0,8 X 0,6 mm. in diameter. 
7. Stylaster bilobatus sp. n. Plate I, figs. 9 and 10. 
Stat. 156. 0°29.25S., 130° 5.3 E. N.W. of New Guinea. 469 M. Several small pieces, pink. 
SNES Big Ro OSsebS., Wee Oe iss Ie lls, 204 M. 1 piece, white. 
Stat. 297. 10°39 S., 123°40 E. Between Timor and Rotti Isl. 520 M. 1 young, white piece, 
3 old, yellowish pink pieces, from 2 different colonies. 
This species is flabellate and the branches do not anastomose (Fig. 9). The highest 
piece is 40 mm. and the broadest about 35 mm. Probably these measurements are not very 
much exceeded in the complete colony. The base of the thickest stem is 2 mm. in diameter. 
The colour is pale pink, almost white at the tips of the branches. Three evidently very old 
specimens from Stat. 297 were a dull, dirty-looking yellowish pink. The surface of the coral is 
scattered over with a few small blunt spines (Fig. 10); these are most developed in the old 
specimens. The cyclosystems are borne in a row on the two sides of the branches. They are 
bracket-like, but they are peculiar in having the sides of the bracket very much developed, 
while the abaxial side is very short, so that the cyclosystem looks like a pair of fan-shaped 
leaves, standing face to face. The cyclosystem is 0,7 mm. across transversely, by 1 mm. axial- 
abaxially and the cyclosystems on either side of the stem are 2 mm. apart. 
The ampullae occur on both surfaces of the flabellum, always close to the cyclosystems. 
Fac. Alba. 
The two small white specimens from Stat. 251 and 297 seem to form a distinct facies. 
Besides the difference in colour, the branches are not so zigzag in their growth and the cyclo- 
systems are larger and more solidly built. The largest cyclosystem measures 1 mm. by 1,1 mm. 
The differences however are not sufficient to constitute a distinct species. 
This species may be defined: 
Hydrophytum subflabellate, with bilobed, bracket-like cyclosystems. 
Stylaster sp.? 
Stat. 59. 10°22'.75., 123°16.5 E. S.W. Off Timor 390 M. 1 ‘dead’ colony. 
This specimen is a much worn ‘dead’ colony. It is 26 mm. in height. The colour is 
white: the surface is longitudinally striated. The cyclosystems are bracket-like and borne in a 
row on each side of the branch. There is an ampulla on the surface of one branch. 
This coral probably belongs to the species S. é2Zodatus, but the cyclosystems are too 
much worn to identify it with certainty. 
