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T.G. PILLAI AND HA. TEN HOVE 



Fig. 14 Spiraserpula caribensis sp. nov. A-J, From Florida, Stock Island, Stn. 7B. A, Tube with granular overlay and longitudinal ridges. 

 B-F, ITS seen in various tube fragments: B, bottom cross-section showing median dorsal ridge on convex wall, narrow lateral ridge on 

 either side, and serrated ventral ridge (barely visible); middle cross-section with serrated ventral ridge along concave wall; C, ventral ridge 

 in sectional view (barely visible), and dorsal and lateral ridges; D, substratal view of first formed coil of tube opened to show smooth dorsal 

 and serrated ventral ridge; E, smooth dorsal ridge in the first formed coil, on the right; F, uncoiled part of tube showing smooth dorsal 

 ridge tapering at both ends. G, Anterior end of specimen, with thoracic glands, and showing dorsal and ventral abdominal grooves. H, 

 Radioles of same specimen with left and right filamentous rudimentary opercula. I & J, anterior end of a worm with two views of collar. 

 K-M, Bayonet chaetae. 



