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Records of the Australian Museum (2009) Vol. 61 
Figure 31. A-I, Serpula sp.? from AM W21414: (A,B) dorsal and ventral views of the tube; ( C-H) bayonet-shaped 
special collar chaetae; ( F,H) bayonet-shaped chaetae from deep within the collar fascicle showing a moderately long 
unserrated notch; ( H) thoracic uncini; (7) anterior abdominal uncini. 
and the presence of an apron. Its tube is quite unlike those 
of known species of Serpula, Crucigera or Hydroides from 
the Indo-West Pacific, although it could belong to any one 
of them, although the peristomes along the tube suggest 
that could be a species of Serpula. Future studies based 
on additional material would help to determine this very 
interesting species 
Serpula watsoni Willey, 1905 
Figs 32A-N, 33A-N 
Serpula watsoni Willey, 1905: 317, pi. VII, fig. 187 and pi. 
VIII, fig. 6. 
Serpula watsoni Willey.—Straughan (1967a: 207, fig. 3b), 
Imajima & ten Hove (1986: 2), Sun & Yang (2001: 194, 
fig. 6G-M). 
Material examined. Kimberleys, Western Australia: 1 specimen, AM 
W202694, south west comer of Lucas Island, 15°13'S 124°31'E, on dead 
Pecten shell, 30 m, 24 Jul. 1988, st 101; 2 specimens, AM W21408, 
Lafontane Island, 14°10'S 125°47'E, 15 m, 19 Jul. 1988, st 68. One tiny 
juvenile specimen, with part of tube, AM W221446, reef north west of 
Buffon Island, 14°55'S 124°41’E, 20 m, 23 Jul. 1988, st 85; all coll, by 
P.A. Hutchings. 
Description 
Measurements. Specimen from AM W202694 has a 
complete tube: 43.0 mm long, external width 2.7 mm. Total 
length of worm is 6.8 mm, thoracic width 1.0 mm; abdominal 
length 5.8 mm. A specimen from AM W21408 has a thoracic 
width of 2.0 mm; longest operculum and peduncle 4.2 mm, 
operculum itself 2.0 mm long in two specimens; largest 
opercular diameter 1.7 mm. Juvenile specimen: width of tube 
0.5 mm; total length of worm 2.1 mm; width of thorax 0. 4 
