ON RECENT SPECIES OF SPIRASERPULA REGENHARDT, 1961 



43 



Plate 3 Scanning electron micrographs of chaetae. A-D, Spirserpula nudicrista sp. nov.: A, bayonet chaeta. B, thoracic uncini. C, 

 abdominal uncini. D, flat trumpet-shaped abdominal chaetae. E-G, S. lineatuba (Straughan, 1967): E, bayonet chaetae. F, abdominal 

 uncini. G, flat trumpet-shaped abdominal chaetae. 



