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T.G. PILLAI AND HA. TEN HOVE 



Fig. 12 Spiraserpula zibrowii sp. nov. From type specimens. A & B, Substratal view of two tubes opened to show the unserrated dorsal 

 ridge. The serrated ventral ridge consists here of a row of isolated teeth, but is a continuous ridge in the remaining material. C, Juvenile 

 paratype. D, Older specimen (holotype) broken in two. Anterior part with right rudimentary operculum; posterior abdomen with part of 

 dorsal ridge attached to mid-dorsal groove. E, Paratype. F & G, Two bayonet chaetae from holotype; H & I, two bayonet chaetae from 

 paratype. J-O from paratype. J, Thoracic uncini of small specimen with single row of teeth anteriorly and a cluster of more than one row 

 posteriorly. K, Similar uncini from first abdominal torus. L, Uncini from second abdominal torus; there are less teeth in a single row. M & 

 N, Anterior abdominal uncini, and flat trumpet chaetae with large lateral tooth. O, Posterior abdominal uncini; except for a single anterior 

 tooth, the uncini are rasp-shaped, with teeth in several rows. 



