44 



T.G. PILLAI AND H.A. TEN HOVE 



Plate 4 Scanning electron micrographs of chaetae. A-D, Spiraserpula zibrowii sp. nov.: A, bayonet chaetae. B, thoracic uncini. C, 

 abdominal uncini. D, flat trumpet-shaped abdominal chaetae. E & F, S. caribensis, sp. nov.: bayonet chaetae. 



