12 
2. Stylaster bellus Dana. 
Allopora bella Dana. Zoophytes, p. 696. Pl. LX, Fig. 6 and 6a. Paumotu Archipelago. 
Cyclopora bella Verril. Proc. Essex Institute. Vol. V, 1866—1867. Communications p. 38. 
Stat. 95. 5°43.5N., 119°40' E. Off Sulu Ils. 522 M. 3 specimens, one dry. 
Stat. 156. 0° 29'.2 S., 130° 5/.3 E. Off N.W. off New Guinea 469 M. 3 young specimens. 
Stat. 150. 0° 6 N., 129° 7’.2 E. Djilolo Passage. 1089 M. 1 young specimen. 
These two last stations are close together, though the depth differs greatly. 
The largest specimens are those in spirit from Stat. 95, one is about 110 mm. wide 
by 65 mm. in height and this piece is fairly intact. The diameter of the stem where it is 
broken off at the base is 12 mm., the diameter of the axis of the terminal branches at their 
bases about 2,5 mm. The cyclosystems are about 1,2 mm. The ampullae appear, at first, close 
to the cyclosystems, later they spread all over the branches. 
The chief difference between Cyclofora della and the specimens of the Siboga collection 
is (see VERRILL) that the septa are joined together at their inner edges, to form a ring, in the 
former, while this is the exception, rather than the rule in the latter (see Dana Pl. LX, fig. 6a). 
We do not regard this as important, as the fusion of the inner edges of the septa often occurs 
in old colonies of other species and not in young ones, or at least not in the younger branches 
of young colonies. 
3. Stylaster densicaulis Moseley. 
MOSELEY. Challenger Reports. Zoology. Vol. II. p. 57. Pl. I, fig. 5. Off Rio de La Plata. 600 fms. 
Stat. 156. 0°29'.2S., 130° 5.3 E. N.W. of New Guinea. 469 M. 1 Ex. 
Stat. 177.°2° 24°.5 S., 129° 38.5 E. N. of Ceram. 1300—1633 M. 1 Ex. 
The type specimens of this species were obtained by the Challenger in 600 fathoms 
off the mouth of the Rio de La Plata in S. America. The two specimens from the Siboga 
collection, which we refer to the same species, were found in closely situated stations in the 
Malay Archipelago, one with a depth of 469 M. and the other 1300—1633 metres. If we 
regard this as a deep sea species, the fact that it has only been found in such widely separated 
localities as off the La Plata and off New Guinea is not an exceptional fact in the distribution 
of deep sea corals. 
The largest colony, that from Stat. 177, is fairly intact and is about 45 mm. in height 
and breadth. The branches have the stems compressed in a plane at right angles to the plane 
of the flabellum, even more markedly than in Mose.ry’s specimens. Sometimes the branch 
rises up into quite a sharp ridge; one branch is 5,7 mm. by 2 mm. in diameter. The base of 
the main stem is 6,2 mm. by 5 mm. but in this case the longest diameter is in the plane of the 
flabellum. The main stem is hollow. The cyclosystems are from 1 mm, to 1,2 mm. in diameter. 
4. Stylaster gemmascens Milne Edwards & Haime. 
MILNE EDWARDS et HAIME. Histoire naturelle des Coralliaires, Vol. II, p- 130. Indian Sea. 
P. M. DuNcAN. Trans. Zool. Soc: pt. 2, Vol. WII, pp. 332, Pl eueix, fis. 16) 810 and 
13—15. North Atlantic. 530 fms. 
