Pillai: Serpulid polychaetes from the Australian Kimberleys 
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o f 
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0.5mm 
0.5mm 
Figure 54. A-F, Spirobranchuspaumotanus (Chamberlin, 1919) from specimens in sample no. BMNH 1970.855, Royal Society Expedition 
in 1965 to the Solomon Islands; locality Komimbo Bay, collected and presented to the BMNH by P.E. Gibbs. (A) a tube with two massive 
teeth developed anteriorly, also showing the irregular pits caused by a boring sponge; ( B,C) operculum of an adult specimen; B, Right 
lateral view, and C, anterodorsal view. D-F, three different views of the operculum of an adult specimen in which the left dorsolateral 
opercular process had been damaged: ( D ) anterodorsal view; (E) right lateral view, and (F) right lateral view. 
tenhovi, but unlike in the former, the boss gradually merges 
with the blade and is barely recognizable. 
Total length of operculum and peduncle is approximately 
equal to that of its abdomen in S. murrayi (Fig. 53B). On 
the other hand, the abdomen is significantly longer in other 
S. latiscapus- like species: in S. zelandicus and S. tenhovi : 
about twice as long as the operculum plus peduncle. 
Furthermore, in S. murrayi , the ratio of the diameter of the 
basal opercular plate to length of opercular peduncle (based 
on those described in Fig. 53B,D), is approximately 1:2. 
In S. zibrowii (based those in Fig. 63J,G,H) approximately 
1:1. In S. zelandicus (based on those in Fig. 62B,D,E) it is 
1:1.3. In S. tenhovi , new species, (based on those in Fig. 
63C-E) is 1:2.7-3.6. 
