сое II 



Plate I. Stereogram of the structure of the front end of the body of Siboglinum caulleryi, in ventral 



view. 



cex - distal canal of coelomoduct; cin - proximal canal of coelomoduct; сое - coelomic canal 



oftentacle;n/f / protocoele; cue 11 - mesocoele ; cur- heart; ex -excretory portion of coelomoduct; 



mdv - dorso-ventral muscles; pc - external pore of coelomoduct; pr - pericardial sac; t - tentacle; 



va - afferent vessel of tentacle; id - dorsal vessel; ve - efferent vessel of tentacle; vl - lateral 



cephalic vessel; vm - median cephalic vessel; w - ventral vessel. (After Ivanov, 1960a.) 



C* 



