Pillai: Serpulid polychaetes from the Australian Kimberleys 
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Figure 62. A-J, Spirobranchus zelandicus n.sp., BMNH 1936.2.8.3047-3048, Two specimens, from New Zealand, Discovery Expedition 
Stn. 941, collected on 20.08.1932. (A) tube of holotype, with tube of a juvenile, paratype, on it. Both are covered over by a thin calcare¬ 
ous encrusting organism having scattered foramina over its surface. A high median longitudinal ridge ends in a conspicuous stout tooth 
projecting forwards over the aperture in the adult (holotype); yet to be formed in the juvenile tube (paratype); ( B ) whole worm (holotype), 
showing its 4-tiered operculum, unfringed inter-radiolar membranes, wide collar and long-shafted abdominal neurochaetae; (C) another 
view of the 4-tiered operculum of the holotype; ( D ) whole worm (paratype) with its single-tiered operculum, un-fringed peduncular wings 
and inter-radiolar membranes; ( E ) operculum of the paratype, another view; (F) bayonet-shaped special collar chaeta showing its boss 
and the long serrated part of the chaetal shaft preceding the boss. The gradually tapering blade is shorter than the serrated distal part of 
the chaetal shaft plus boss; boss is not squarish, yet recognizable, smoothly rounded and considerably narrower than blade; ( G,H) distal 
ends of abdominal neurochaetae; (I) thoracic uncini showing serrated gouge; (7) enlarged view of serrated gouge. 
