Pillai: Serpulid polychaetes from the Australian Kimberleys 
119 
Figure 14. A-K and Q, Hydroides kimberleyensis n.sp., from holotype AM W202931: (A) whole worm removed from its tube; (B-D) 
different views of operculum; ( E-l ) bayonet-shaped special collar chaetae. J-K, uncini: (7) thoracic uncini, (K) anterior abdominal uncini. 
L-P, from paratype AM W202963: (L) whole worm; (N-P) different views of operculum. (Q) tube with worm in situ. 
Hydroides xishaensis Chen & Wu, 1978 (plate 1, fig. 1) 
has 5 triangular, concave coronal processes, lacking basal 
spines, and their pointed tips are directed towards the centre 
of the corona like claws of a grapple-iron. As also shown 
in Chen & Wu’s figure the infundibular processes and their 
triangular tips are directed outwards. In contrast, the coronal 
processes of H. kimberleyensis are not clawed and directed 
inwards but outwards at their tips, and each one of them 
bears a number of basal spines (Fig. 45D). Moreover, its 
infundibular processes are pressed against the bases of its 
coronal spines, and only their tips are curved outwards. An 
additional character to support the distinction between the 
two species concerns differences in the unserrated notch in 
the bayonet-shaped special collar chaetae. As figured by 
Chen & Mu (1978: plate 1, figs 2,3), it is absent or short. On 
the other hand, it is moderately long (longer than the teeth 
on the boss, but up to one about Vs the total length of the 
blade) in H. kimberleyensis. 
Unlike in many species of Hydroides dealt with in this 
paper, anterior abdominal tori are lateral, with a wide mid¬ 
dorsal gap separating them. 
Etymology. Named after the type locality, the Kimberleys, 
Western Australia. 
