382 
S.D. Cairns 
Lady: stn RW96-19, 5, NTM C8085. 
Courageous: stn 83/25, 1, WAM 107-84; stn 002, 
1, WAM 63-84; stn 003, 1, WAM 62-84; stn 004, 1, 
WAM 65-84; stn 013, 2, WAM 64-84. 
Umataka Maru: stn 6920, 1, WAM 128-84; stn 
6921, 1, WAM 147-84; stn 6922, 1, WAM 1024, 85; 
stn 6926, 1, WAM 104-84. 
Surefire: stn 5,1, WAM 187-92. 
Remarks 
First reported from Western Australia by Grygier 
(1991) as the host of a petrarcid ascothoracidan 
crustacean, one additional specimen from Soela stn 
01/84/120 is reported and figured (Fig 4a) that 
contains this characteristic crustacean gall. Similar 
galls have also been reported from this species in 
the Japan region (Grygier and Nojima 1995). 
Distribution 
Western Australia: common on continental slope 
of northwestern coast from Cartier Island to Port 
Hedland; 260-696 m; 8.2°-9.0°C; soft (muddy) 
substrates. Elsewhere: western Pacific from Japan 
to southeastern Australia; 88-1500 m (Cairns and 
Zibrowius 1997). 
Deltocyathus suluensis Alcock, 1902c 
Deltocyathus magnificus var. suluensis Alcock, 1902c: 
20 - 21 . 
Deltocyathus suluensis - Cairns and Zibrowius 1997: 
125, fig. 16 d (synonymy and description). 
New Records 
Soela: stn 01/84/60, 1, WAM 576-84; stn 01/84/ 
63, 1, WAM 738-84; stn 01/84/120, 3: 2 (WAM 
700-84), 1 (USNM 97000). 
Courageous: stn 000 or 001, 1, WAM 67-84; stn 
002, 1, WAM 69-84. 
Distribution 
Western Australia: continental slope of 
northwestern coast from Dampier Land to Port 
Pledland; 401-530 m; soft (muddy) substrates. 
Elsewhere: Philippines; Indonesian region; ridges 
north of New Zealand; 142-565 m (Cairns and 
Zibrowius 1997). 
Deltocyathus sarsi (Gardiner and Waugh, 1938) 
Figure 3 k-1 
Fungiacyathus sarsi Gardiner and Waugh, 1938: 201, 
pi. 7, figs. 17-18 (description). 
New Record 
Diamantina: stn 45, 1, WAM 1028-79. 
Remarks 
Among the approximately 20 extant species of 
Deltocyathus, 4 have 5 cycles of septa and only 3 
frequently reproduce by fragmentation, D. sarsi 
being the only species to have both characters. It 
differs from D. suluensis in having a regenerated 
corallum and much better developed S5. The single 
specimen reported herein of 15.1 mm in calicular 
diameter is thought to be the only record of this 
species subsequent to its original description. 
Distribution 
Western Australia: continental shelf of 
southwestern coast north of Rottnest Island; 80 m. 
Elsewhere: Maidive Islands (Kolumadulu Atoll); 44 
m (Gardiner and Waugh 1938). 
Genus Heterocyathus Milne Edwards and Haime, 
1848a 
Heterocyathus aequicostatus Milne Edwards and 
Haime, 1848a 
Figure 3 a-b 
Heterocyathus aequicostatus Milne Edwards and 
Haime, 1848a: 324, pi. 10, fig. 8.—Folkeson, 1919: 
8-10 (in part: pi. 1, figs. 8-9).—Wells, 1964: 
108.—Veron, 1986: 558-559 (in part: color fig., 
not black and white, which is Heteropsammia ).— 
Hoeksema and Best, 1991: 226-230, figs. 1-11 
(synonymy, key, and diagnosis). 
New Records 
Crown of Thorns Survey (1972, 1974): Dampier 
Archipelago (Rosemary Island and Norbill Bay, 0- 
5 m), collectively 65 specimens from 6 collections: 
58 (WAM 152-, 162-, 163-, and 164-83; 248- and 
262-93) and 7 (USNM 97001). 
Other records: South Head, Beagle Bay, beach drift, 
28 X 1988, 1, WAM 1056-88; near Keraudren, Western 
Australia, low tide, IX 1976,13, WAM 151-83. 
Diagnosis 
Corallum relatively large (10 mm in GCD) and 
squat, either free of attachment or encrusting a 
scaphopod or gastropod shell; primary sipunculid 
efferent pore circular, 2.0-2.2 mm in diameter, 
usually located aborally, and often lending an 
asymmetry to corallum. Additional smaller (0.4 
mm in diameter) sipunculid pores (previous 
efferent pores that have been subsequently 
overgrown by the coral but still retain an open 
canal through the corallum (Yonge 1975)) also 
occur on lateral thecal faces. Corallum entirely 
white. Costae equal in width as well as being 
approximately equal in width to intercostal 
furrows. Septa crowded and hexamerally arranged 
in 4 complete and often an incomplete fifth cycle 
(48-72 septa): S1>S2>S4>S3 or S1>S2>S3>S5>S4, 
depending on the presence of pairs of S5 in a half¬ 
system. Outer edges of septa slope inward toward 
