294 



PART II. SYSTEMATIC ACCOUNT 



TTIS 



0.2 



MM 



Fig. GG133. Siboglinutn silone: Fore-part of the body seen from the ventral side. 



с - cephalic lobe ; f- bridle ; ms - mesosoma ; mts - metasoma ; pa - papillae ; pi - pinnules ; 



ps - protosoma ; sv - ventral sulcus ; t - tentacle. 



